Remove icon with bad sRGB profile (causing Qt warnings)

(cherry-picked from 2a2bf2c)

Author: nyalldawson

src/plugins/interpolation/interpolator.qrc

@@ -1,6 +1,5 @@
 <RCC>
-    <qresource prefix="/" >
-        <file>options.png</file>
+    <qresource prefix="/">
         <file>raster-interpolate.png</file>
     </qresource>
 </RCC>

src/plugins/interpolation/options.png

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>772</width>
-    <height>382</height>
+    <width>858</width>
+    <height>389</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -147,7 +147,7 @@
         </property>
         <property name="icon">
          <iconset resource="interpolator.qrc">
-          <normaloff>:/options.png</normaloff>:/options.png</iconset>
+          <normaloff>:/mActionOptions.svg</normaloff>:/mActionOptions.svg</iconset>
         </property>
        </widget>
       </item>

src/plugins/interpolation/qgsinterpolationdialogbase.ui

@@ -60,15 +60,15 @@
       <string notr="true"/>
      </property>
      <property name="icon">
-      <iconset resource="../plugins/interpolation/interpolator.qrc">
-       <normaloff>:/options.png</normaloff>:/options.png</iconset>
+      <iconset resource="../../images/images.qrc">
+       <normaloff>:/images/themes/default/mActionOptions.svg</normaloff>:/images/themes/default/mActionOptions.svg</iconset>
      </property>
     </widget>
    </item>
   </layout>
  </widget>
  <resources>
-  <include location="../plugins/interpolation/interpolator.qrc"/>
+  <include location="../../images/images.qrc"/>
  </resources>
  <connections/>
 </ui>