remove unused GM flags

Depends on https://codereview.chromium.org/873753002/

Thumbs up to CLion for refactoring this for me.

BUG=skia:

Review URL: https://codereview.chromium.org/867963004

1 files changed, 0 insertions, 3 deletions

diff --git a/gm/stringart.cpp b/gm/stringart.cpp
index 050d78f2d8..fe69626447 100644
--- a/gm/stringart.cpp
+++ b/gm/stringart.cpp
@@ -23,9 +23,6 @@ public:
     StringArtGM() {}
 
 protected:
-    uint32_t onGetFlags() const SK_OVERRIDE {
-        return kSkipTiled_Flag;
-    }
 
     SkString onShortName() SK_OVERRIDE {
         return SkString("stringart");