Style icons: fix artifacts in media icons

The media svg icons had some unneeded transparent objects which lead to
artifacts during png export/pngcrush optimization. Fix it by removing
the unused objects and re-export the pngs again.

Fixes: QTBUG-122272
Change-Id: I7e63ef53e5a78ce3a06c0053dea98e13c6ba264b
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 7a4b307210f2825f5f53b6d6f8537f27cc9659a1)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/widgets/styles/images/media-pause.svg

@@ -21,7 +21,7 @@
    inkscape:export-ydpi="768"><metadata
    id="metadata15"><rdf:RDF><cc:Work
        rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
-         rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+         rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title /></cc:Work></rdf:RDF></metadata><defs
    id="defs13" /><sodipodi:namedview
    pagecolor="#ffffff"
    bordercolor="#666666"
@@ -51,16 +51,7 @@
 	.st0{fill:none;}
 </style>
 
-<rect
-   id="rect19-6"
-   width="2.0723705"
-   height="9.2413378"
-   x="-1.0361853"
-   y="6.6930394"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101217;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(-45)"
-   inkscape:label="rect1"
-   sodipodi:insensitive="true" /><g
+<g
    id="g1774"><rect
      style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:2.0575"
      id="rect1755"

src/widgets/styles/images/media-play.svg

@@ -51,24 +51,7 @@
 	.st0{fill:none;}
 </style>
 
-<rect
-   id="rect19"
-   width="2.0723703"
-   height="9.2413387"
-   x="10.277523"
-   y="-4.6206694"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101216;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(44.999999)"
-   inkscape:label="rect2" /><rect
-   id="rect19-6"
-   width="2.0723705"
-   height="9.2413378"
-   x="-1.0361853"
-   y="6.6930394"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101217;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(-45)"
-   inkscape:label="rect1"
-   sodipodi:insensitive="true" /><path
+<path
    id="rect873"
    style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.93347"
    d="M 3 3 L 3 13 L 12.896484 8 L 3 3 z " /></svg>

src/widgets/styles/images/media-seek-backward.svg

@@ -51,24 +51,7 @@
 	.st0{fill:none;}
 </style>
 
-<rect
-   id="rect19"
-   width="2.0723703"
-   height="9.2413387"
-   x="-12.349894"
-   y="-4.6206694"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101216;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(-135)"
-   inkscape:label="rect2" /><rect
-   id="rect19-6"
-   width="2.0723705"
-   height="9.2413378"
-   x="-1.0361853"
-   y="6.6930394"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101217;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(-45)"
-   inkscape:label="rect1"
-   sodipodi:insensitive="true" /><g
+<g
    id="g1560"
    transform="rotate(180,8,7.9999997)"><path
      id="rect873"

src/widgets/styles/images/media-seek-forward.svg

@@ -51,24 +51,7 @@
 	.st0{fill:none;}
 </style>
 
-<rect
-   id="rect19"
-   width="2.0723703"
-   height="9.2413387"
-   x="10.277523"
-   y="-4.6206694"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101216;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(44.999999)"
-   inkscape:label="rect2" /><rect
-   id="rect19-6"
-   width="2.0723705"
-   height="9.2413378"
-   x="-1.0361853"
-   y="6.6930394"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101217;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(-45)"
-   inkscape:label="rect1"
-   sodipodi:insensitive="true" /><g
+<g
    id="g1560"><path
      id="rect873"
      style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.45442"

src/widgets/styles/images/media-skip-backward.svg

@@ -51,25 +51,8 @@
 	.st0{fill:none;}
 </style>
 
-<rect
-   id="rect19-6"
-   width="2.0723705"
-   height="9.2413378"
-   x="-1.0361853"
-   y="6.6930394"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101217;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(-45)"
-   inkscape:label="rect1"
-   sodipodi:insensitive="true" /><g
-   id="g1687"><rect
-     id="rect19"
-     width="2.0723703"
-     height="9.2413387"
-     x="-12.349894"
-     y="-4.6206694"
-     style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101216;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-     transform="rotate(-135)"
-     inkscape:label="rect2" /><path
+<g
+   id="g1687"><path
      id="rect873"
      style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.45442"
      d="M 14,11.999999 V 3.9999994 L 7,7.9999996 Z" /><path

src/widgets/styles/images/media-skip-forward.svg

@@ -51,25 +51,8 @@
 	.st0{fill:none;}
 </style>
 
-<rect
-   id="rect19-6"
-   width="2.0723705"
-   height="9.2413378"
-   x="-1.0361853"
-   y="6.6930394"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101217;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(-45)"
-   inkscape:label="rect1"
-   sodipodi:insensitive="true" /><g
-   id="g1659"><rect
-     id="rect19"
-     width="2.0723703"
-     height="9.2413387"
-     x="10.277523"
-     y="-4.6206694"
-     style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101216;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-     transform="rotate(44.999999)"
-     inkscape:label="rect2" /><path
+<g
+   id="g1659"><path
      id="rect873"
      style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:1.45442"
      d="m 2,4 v 8 L 9,7.9999998 Z" /><path

src/widgets/styles/images/media-stop.svg

@@ -52,15 +52,6 @@
 </style>
 
 <rect
-   id="rect19-6"
-   width="2.0723705"
-   height="9.2413378"
-   x="-1.0361853"
-   y="6.6930394"
-   style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.101217;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-   transform="rotate(-45)"
-   inkscape:label="rect1"
-   sodipodi:insensitive="true" /><rect
    style="fill:#000000;fill-opacity:1;stroke:none;stroke-width:2.06992"
    id="rect1703"
    width="12"