Remove unnecessary tags from the SVGs

> The clip-rule property is not supported by Qt.
> The fill-rule property is not used in this image since there are no self-intersections.
> The fill property is not used in this image, since it is always recoloured. The colour shown here is incorrect (different from what we actually use in the interface).

CURA-7278

Co-Authored-By: Ghostkeeper <Ghostkeeper@users.noreply.github.com>

resources/themes/cura-light/icons/low/Cancel.svg

@@ -1,3 +1,3 @@
-<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M12 10.5106L8.48936 7L7 8.48936L10.5106 12L7 15.5106L8.48936 17L12 13.4894L15.5106 17L17 15.5106L13.4894 12L17 8.48936L15.5106 7L12 10.5106Z" fill="#000E1A"/>
+<svg width="24" height="24" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+<path d="M12 10.5106L8.48936 7L7 8.48936L10.5106 12L7 15.5106L8.48936 17L12 13.4894L15.5106 17L17 15.5106L13.4894 12L17 8.48936L15.5106 7L12 10.5106Z"/>
 </svg>

resources/themes/cura-light/icons/low/Check.svg

@@ -1,3 +1,3 @@
-<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M10.7 13.3L7.4 10L6 11.4L10.7 16.1L17.4 9.4L16 8L10.7 13.3Z" fill="#000E1A"/>
+<svg width="24" height="24" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+<path d="M10.7 13.3L7.4 10L6 11.4L10.7 16.1L17.4 9.4L16 8L10.7 13.3Z"/>
 </svg>

resources/themes/cura-light/icons/low/CircleSolid.svg

@@ -1,3 +1,3 @@
-<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<circle cx="12" cy="12" r="10" fill="#000E1A"/>
+<svg width="24" height="24" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+<circle cx="12" cy="12" r="10"/>
 </svg>

resources/themes/cura-light/icons/low/Warning.svg

@@ -1,3 +1,3 @@
-<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path fill-rule="evenodd" clip-rule="evenodd" d="M13 6H11V13H13V6ZM13 15H11V17H13V15Z" fill="#000E1A"/>
+<svg width="24" height="24" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+<path d="M13 6H11V13H13V6ZM13 15H11V17H13V15Z"/>
 </svg>