Revert "Add a requiresVertexShader method to GrGLEffect"

src/gpu/effects/GrSimpleTextureEffect.cpp

Index: src/gpu/effects/GrSimpleTextureEffect.cpp
diff --git a/src/gpu/effects/GrSimpleTextureEffect.cpp b/src/gpu/effects/GrSimpleTextureEffect.cpp
index 88ba56a54ce650a4f74efb222fca1faa122c16ff..cf08d3bcd335f9198e32b2c81f163b1596cb9663 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/GrSimpleTextureEffect.cpp
@@ -24,11 +24,6 @@ public:
         }
     }
 
-    virtual bool requiresVertexShader(const GrDrawEffect& drawEffect) const SK_OVERRIDE {
-        const GrSimpleTextureEffect& ste = drawEffect.castEffect<GrSimpleTextureEffect>();
-        return GrEffect::kCustom_CoordsType == ste.coordsType();
-    }
-
     virtual void emitCode(GrGLShaderBuilder* builder,
                           const GrDrawEffect& drawEffect,
                           EffectKey key,