Disable bitmapcopy gm on Android

This has been failing on Nexus S.  Disable so that we
don't miss further regressions.

Bug @ http://code.google.com/p/skia/issues/detail?id=705
Review URL: https://codereview.appspot.com/6427053

git-svn-id: http://skia.googlecode.com/svn/trunk@4696 2bbb7eff-a529-9590-31e7-b0007b416f81

gm/bitmapcopy.cpp

@@ -119,7 +119,8 @@ private:
 
 //////////////////////////////////////////////////////////////////////////////
 
+#ifndef SK_BUILD_FOR_ANDROID
 static GM* MyFactory(void*) { return new BitmapCopyGM; }
 static GMRegistry reg(MyFactory);
-
+#endif
 }