Unit Tests: eliminate stray SkDebugf()s.

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1733113002

Review URL: https://codereview.chromium.org/1733113002
diff --git a/tests/BitmapTest.cpp b/tests/BitmapTest.cpp
index 015b917..f939875 100644
--- a/tests/BitmapTest.cpp
+++ b/tests/BitmapTest.cpp
@@ -151,9 +151,7 @@
   SkBitmap bm;
   bm.allocPixels(SkImageInfo::Make(1, 1, ct, kPremul_SkAlphaType));
   bm.eraseColor(input);
-  if (reporter->verbose()) {
-      SkDebugf("expected: %x actual: %x\n", expected, bm.getColor(0, 0));
-  }
+  INFOF(reporter, "expected: %x actual: %x\n", expected, bm.getColor(0, 0));
   REPORTER_ASSERT(reporter, bm.getColor(0, 0) == expected);
 }