Remove misleading text that says you could enter hostnames

We don't resolve the hostnames ever. You can only enter IP addresses.

plugins/UM3NetworkPrinting/resources/qml/DiscoverUM3Action.qml

@@ -331,7 +331,7 @@ Cura.MachineAction
 
             Label
             {
-                text: catalog.i18nc("@label", "Enter the IP address or hostname of your printer on the network.")
+                text: catalog.i18nc("@label", "Enter the IP address of your printer on the network.")
                 width: parent.width
                 wrapMode: Text.WordWrap
                 renderType: Text.NativeRendering

resources/qml/WelcomePages/AddPrinterByIpContent.qml

@@ -99,7 +99,7 @@ Item
                 font: UM.Theme.getFont("default")
                 color: UM.Theme.getColor("text")
                 renderType: Text.NativeRendering
-                text: catalog.i18nc("@label", "Enter the IP address or hostname of your printer on the network.")
+                text: catalog.i18nc("@label", "Enter the IP address of your printer on the network.")
             }
 
             Item