CustomToolButton: Remove background color

Author: adazem009

src/uicomponents/CustomToolButton.qml

@@ -14,7 +14,6 @@ CustomButton {
  signal clicked()
  id: control
  font.capitalization: Font.MixedCase
- Material.background: Qt.rgba(foregroundColor.r, foregroundColor.g, foregroundColor.b, 0.15)
  Material.foreground: foregroundColor
  icon.color: foregroundColor
  onReleased: clicked()