Remove useless and unused SVG elements

- Remove unused imports of xlink.
- Remove comments about which application originally wrote the text file. It's untrue because PyCharm edited it, etc.
- Remove unused IDs.
- Remove unused colours for icons rendered with RecolorImage.
- Remove useless x and y positions on 0, which is the default.
- Remove useless style setting the background to transparent.
- Remove useless whitespace in the path d attribute, and remove the then-useless XML space preserving attribute.
- Remove unused groups.
- Remove unused CSS classes.

Contributes to issue CURA-8342.

plugins/PostProcessingPlugin/Script.svg

@@ -1,10 +1,6 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<g>
-	<polygon style="fill:#1D1C1A;" points="4.4,12 8.2,15.8 6.8,17.2 1.6,12 6.8,6.8 8.2,8.2 	"/>
-	<polygon style="fill:#1D1C1A;" points="22.4,12 17.2,17.2 15.8,15.8 19.6,12 15.8,8.2 17.2,6.8 	"/>
-	
-		<rect x="3.9" y="11" transform="matrix(0.1236 -0.9923 0.9923 0.1236 -1.429 22.4317)" style="fill:#1D1C1A;" width="16.1" height="2"/>
-</g>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+	<polygon points="4.4,12 8.2,15.8 6.8,17.2 1.6,12 6.8,6.8 8.2,8.2" />
+	<polygon points="22.4,12 17.2,17.2 15.8,15.8 19.6,12 15.8,8.2 17.2,6.8" />
+	<rect x="3.9" y="11" transform="matrix(0.1236 -0.9923 0.9923 0.1236 -1.429 22.4317)" width="16.1" height="2" />
 </svg>

plugins/SimulationView/resources/Pause.svg

@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<path style="fill:#000E1A;" d="M8,21H6V3h2V21z M18,3h-2v18h2V3z"/>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M8,21H6V3h2V21z M18,3h-2v18h2V3z" />
 </svg>

plugins/SimulationView/resources/Play.svg

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<path style="fill:#231F20;" d="M5,20V4c0-0.8,0.9-1.3,1.5-0.9l13,8c0.6,0.4,0.6,1.3,0,1.7l-13,8C5.9,21.3,5,20.8,5,20z M7,5.8v12.4
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M5,20V4c0-0.8,0.9-1.3,1.5-0.9l13,8c0.6,0.4,0.6,1.3,0,1.7l-13,8C5.9,21.3,5,20.8,5,20z M7,5.8v12.4
 	L17.1,12L7,5.8z"/>
 </svg>

plugins/Toolbox/resources/images/Shop.svg

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<path style="fill:#000E1A;" d="M19,3H5C3.3,3,2,4.3,2,6v3c0,1.5,0.8,2.7,2,3.4V22h16v-9.6c1.2-0.7,2-2,2-3.4V6C22,4.3,20.7,3,19,3z
-	 M10,5h4v4c0,1.1-0.9,2-2,2s-2-0.9-2-2V5z M4,9V5h4v4c0,1.1-0.9,2-2,2S4,10.1,4,9z M18,20h-4v-5h-4v5H6v-7c1.2,0,2.3-0.5,3-1.4
-	c0.7,0.8,1.8,1.4,3,1.4s2.3-0.5,3-1.4c0.7,0.8,1.8,1.4,3,1.4V20z M20,9c0,1.1-0.9,2-2,2s-2-0.9-2-2V5h4V9z"/>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M19,3H5C3.3,3,2,4.3,2,6v3c0,1.5,0.8,2.7,2,3.4V22h16v-9.6c1.2-0.7,2-2,2-3.4V6C22,4.3,20.7,3,19,3z
+	M10,5h4v4c0,1.1-0.9,2-2,2s-2-0.9-2-2V5z M4,9V5h4v4c0,1.1-0.9,2-2,2S4,10.1,4,9z M18,20h-4v-5h-4v5H6v-7c1.2,0,2.3-0.5,3-1.4
+	c0.7,0.8,1.8,1.4,3,1.4s2.3-0.5,3-1.4c0.7,0.8,1.8,1.4,3,1.4V20z M20,9c0,1.1-0.9,2-2,2s-2-0.9-2-2V5h4V9z" />
 </svg>

plugins/UM3NetworkPrinting/resources/svg/Camera.svg

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<path style="fill:#000E1A;" d="M22,6.4l-4,2V8c0-1.7-1.3-3-3-3H5C3.3,5,2,6.3,2,8v8c0,1.7,1.3,3,3,3h10c1.7,0,3-1.3,3-3v-0.4l4,2
-	V6.4z M16,17H4V7h12V17z M20,14.4l-2-1c0-0.9,0-1.8,0-2.8l2-1V14.4z"/>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M22,6.4l-4,2V8c0-1.7-1.3-3-3-3H5C3.3,5,2,6.3,2,8v8c0,1.7,1.3,3,3,3h10c1.7,0,3-1.3,3-3v-0.4l4,2
+	V6.4z M16,17H4V7h12V17z M20,14.4l-2-1c0-0.9,0-1.8,0-2.8l2-1V14.4z" />
 </svg>

plugins/UM3NetworkPrinting/resources/svg/CancelCircle.svg

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<path style="fill:#000E1A;" d="M12,2C6.5,2,2,6.5,2,12s4.5,10,10,10s10-4.5,10-10S17.5,2,12,2z M12,20c-4.4,0-8-3.6-8-8s3.6-8,8-8
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M12,2C6.5,2,2,6.5,2,12s4.5,10,10,10s10-4.5,10-10S17.5,2,12,2z M12,20c-4.4,0-8-3.6-8-8s3.6-8,8-8
 	s8,3.6,8,8S16.4,20,12,20z M16.7,8.7L13.4,12l3.3,3.3l-1.4,1.4L12,13.4l-3.3,3.3l-1.4-1.4l3.3-3.3L7.3,8.7l1.4-1.4l3.3,3.3l3.3-3.3
-	L16.7,8.7z"/>
+	L16.7,8.7z" />
 </svg>

plugins/UM3NetworkPrinting/resources/svg/Check.svg

@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<polygon style="fill:#000E1A;" points="9.1,19.4 1.9,12.2 3.3,10.8 9.1,16.6 19.4,6.3 20.8,7.7 "/>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<polygon points="9.1,19.4 1.9,12.2 3.3,10.8 9.1,16.6 19.4,6.3 20.8,7.7" />
 </svg>

plugins/UM3NetworkPrinting/resources/svg/CheckCircle.svg

@@ -1,9 +1,6 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<g>
-	<path style="fill:#000E1A;" d="M12,2C6.5,2,2,6.5,2,12c0,5.5,4.5,10,10,10s10-4.5,10-10C22,6.5,17.5,2,12,2z M12,20
-		c-4.4,0-8-3.6-8-8c0-4.4,3.6-8,8-8s8,3.6,8,8C20,16.4,16.4,20,12,20z"/>
-	<polygon style="fill:#000E1A;" points="16.3,8.3 11,13.6 7.7,10.3 6.3,11.7 11,16.4 17.7,9.7 	"/>
-</g>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M12,2C6.5,2,2,6.5,2,12c0,5.5,4.5,10,10,10s10-4.5,10-10C22,6.5,17.5,2,12,2z M12,20
+	c-4.4,0-8-3.6-8-8c0-4.4,3.6-8,8-8s8,3.6,8,8C20,16.4,16.4,20,12,20z" />
+<polygon points="16.3,8.3 11,13.6 7.7,10.3 6.3,11.7 11,16.4 17.7,9.7" />
 </svg>

plugins/UM3NetworkPrinting/resources/svg/PauseCircle.svg

@@ -1,10 +1,7 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<g>
-	<path style="fill:#000E1A;" d="M12,2C6.5,2,2,6.5,2,12c0,5.5,4.5,10,10,10s10-4.5,10-10C22,6.5,17.5,2,12,2z M12,20
-		c-4.4,0-8-3.6-8-8c0-4.4,3.6-8,8-8s8,3.6,8,8C20,16.4,16.4,20,12,20z"/>
-	<rect x="13" y="8" style="fill:#000E1A;" width="2" height="8"/>
-	<rect x="9" y="8" style="fill:#000E1A;" width="2" height="8"/>
-</g>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M12,2C6.5,2,2,6.5,2,12c0,5.5,4.5,10,10,10s10-4.5,10-10C22,6.5,17.5,2,12,2z M12,20
+	c-4.4,0-8-3.6-8-8c0-4.4,3.6-8,8-8s8,3.6,8,8C20,16.4,16.4,20,12,20z" />
+<rect x="13" y="8" width="2" height="8"/>
+<rect x="9" y="8" width="2" height="8"/>
 </svg>

plugins/UM3NetworkPrinting/resources/svg/Prohibition.svg

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<svg version="1.1" id="Artwork" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 24 24" style="enable-background:new 0 0 24 24;" xml:space="preserve">
-<path style="fill:#000E1A;" d="M12,2C6.5,2,2,6.5,2,12s4.5,10,10,10s10-4.5,10-10S17.5,2,12,2z M4,12c0-1.8,0.6-3.5,1.7-4.9
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+<path d="M12,2C6.5,2,2,6.5,2,12s4.5,10,10,10s10-4.5,10-10S17.5,2,12,2z M4,12c0-1.8,0.6-3.5,1.7-4.9
 	l11.2,11.2C15.5,19.4,13.8,20,12,20C7.6,20,4,16.4,4,12z M18.3,16.9L7.1,5.7C8.5,4.6,10.2,4,12,4c4.4,0,8,3.6,8,8
-	C20,13.8,19.4,15.5,18.3,16.9z"/>
+	C20,13.8,19.4,15.5,18.3,16.9z" />
 </svg>