Remove part of clang-cl workaround that is no longer needed

...after ColorSharedPtr is gone

Change-Id: Id147e544e3b82577f4b7dbb5987472469782165f

cppcanvas/source/wrapper/implbitmapcanvas.cxx

@@ -41,9 +41,6 @@ namespace cppcanvas
             mxBitmap( rCanvas,
                       uno::UNO_QUERY )
         {
-#if defined __clang__ && defined _MSC_VER // workaround clang-cl ABI bug PR25641
-            (void) (ColorSharedPtr());
-#endif
             OSL_ENSURE( mxBitmapCanvas.is(), "ImplBitmapCanvas::ImplBitmapCanvas(): Invalid canvas" );
             OSL_ENSURE( mxBitmap.is(), "ImplBitmapCanvas::ImplBitmapCanvas(): Invalid bitmap" );
         }

cppcanvas/source/wrapper/implspritecanvas.cxx

@@ -49,9 +49,6 @@ namespace cppcanvas
             mxSpriteCanvas( rCanvas ),
             mpTransformArbiter( new TransformationArbiter() )
         {
-#if defined __clang__ && defined _MSC_VER // workaround clang-cl ABI bug PR25641
-            (void) (ColorSharedPtr());
-#endif
             OSL_ENSURE( mxSpriteCanvas.is(), "ImplSpriteCanvas::ImplSpriteCanvas(): Invalid canvas" );
         }