clean up check now done in Make()

Change-Id: I773450b057ca7da06c7be4bdfd475d0c070f8558
Reviewed-on: https://skia-review.googlesource.com/26560
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>

src/effects/SkToSRGBColorFilter.cpp

@@ -21,11 +21,6 @@ void SkToSRGBColorFilter::onAppendStages(SkRasterPipeline* p,
                                          SkColorSpace* /*dst color space*/,
                                          SkArenaAlloc* alloc,
                                          bool shaderIsOpaque) const {
-    if (fSrcColorSpace->isSRGB()) {
-        // That was easy.
-        return;
-    }
-
     // Step 1: Linearize by undoing the src transfer function.
     // Linear and sRGB will return true to isNumericalTransferFn(), so we check them first.
     SkColorSpaceTransferFn srcFn;