Remove support for <animateColor>.

LayoutTests/svg/W3C-SVG-1.1/animate-elem-30-t.svg

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- =====================================================================-->
 <!-- animate-elem-30-t.svg                                                -->
 <!--                                                                      -->
 <!-- Tests various types of animations on referenced elements.            -->
 <!--                                                                      -->
 <!-- Author : Ola Andersson,  22-Sep-2003                                 -->
 <!--======================================================================--><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Tiny//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-tiny.dtd">
 
 <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" baseProfile="tiny" id="svg-root" width="100%" height="100%" viewBox="0 0 480 360">
@@ skipping 50 matching lines @@
       
       <!-- DEFS-->
       <defs>
          <line id="lineID" x1="30" y1="50" x2="10" y2="10" stroke="rgb(16, 93, 140)" stroke-width="3">
             <animate attributeName="x1" from="30" to="90" begin="0" dur="3" fill="freeze"/>
          </line>
       </defs>
    
       <defs>
          <rect id="rectID" x="10" y="60" width="60" height="20" fill="blue" stroke="black" stroke-width="2">
-            <animateColor attributeName="fill" from="white" to="rgb(16, 93, 140)" begin="0" dur="3" fill="freeze"/>
+            <animate attributeName="fill" from="white" to="rgb(16, 93, 140)" begin="0" dur="3" fill="freeze"/>
             <animate attributeName="height" from="20" to="40" begin="0" dur="3" fill="freeze"/>
          </rect>
       </defs>
    
       <defs>
          <circle id="circleID" cx="20" cy="100" r="10" fill="rgb(16, 93, 140)" stroke="black">
             <animate attributeName="cy" from="100" to="130" begin="0" dur="3" fill="freeze"/>
             <animateTransform attributeName="transform" type="scale" from="1" to="1.5" additive="sum" begin="0" dur="3" fill="freeze"/>
          </circle>
       </defs>
@@ skipping 43 matching lines @@
    
       <use xlink:href="#imageID">
          <animateTransform attributeName="transform" type="scale" from="1 .25" to="1 1" begin="0" dur="3" additive="sum" fill="freeze"/>
       </use>
       <!-- END OF ACTUAL TEST CONTENT-->
    </g>
    
    <text id="revision" x="10" y="340" font-size="40" stroke="none" fill="black">$Revision: 1.6 $</text>
    <rect id="test-frame" x="1" y="1" width="478" height="358" fill="none" stroke="#000000"/>
 </svg>