fish: drop wanda image from gresource

Author: raveit65

mate-panel/panel.gresource.xml

@@ -3,7 +3,6 @@
   <gresource prefix="/org/mate/panel">
     <file compressed="true">panel-properties-dialog.ui</file>
     <file compressed="true">panel-run-dialog.ui</file>
-    <file alias="anim/wanda.png">../applets/fish/wanda.png</file>
   </gresource>
   <gresource prefix="/org/mate/panel/theme">
     <file alias="mate-panel.css">../data/theme/mate-panel.css</file>