remove unused code around SK_SUPPORT_LEGACY_XFERMODE_PARAM

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4384

Change-Id: I5121acd027d935ade169ff65941f29f654a47bd0
Reviewed-on: https://skia-review.googlesource.com/4384
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/tests/ColorFilterTest.cpp b/tests/ColorFilterTest.cpp
index 5d4ef86..ec34a15 100644
--- a/tests/ColorFilterTest.cpp
+++ b/tests/ColorFilterTest.cpp
@@ -79,7 +79,7 @@
 
 //        SkDebugf("--- mc [%d %x] ", mode, color);
 
-        REPORTER_ASSERT(reporter, cf->asColorMode(&c, (SK_XFERMODE_MODE_PARAM*)&m));
+        REPORTER_ASSERT(reporter, cf->asColorMode(&c, (SkBlendMode*)&m));
         // handle special-case folding by the factory
         if (SkBlendMode::kClear == (SkBlendMode)mode) {
             if (c != expectedColor) {
@@ -101,7 +101,7 @@
 
             SkColor c2 = ~color;
             SkBlendMode m2 = ILLEGAL_MODE;
-            REPORTER_ASSERT(reporter, cf2->asColorMode(&c2, (SK_XFERMODE_MODE_PARAM*)&m2));
+            REPORTER_ASSERT(reporter, cf2->asColorMode(&c2, (SkBlendMode*)&m2));
             REPORTER_ASSERT(reporter, c2 == expectedColor);
             REPORTER_ASSERT(reporter, m2 == expectedMode);
         }