Remove unused GrGLSLGeometryProcessor::emitTransform variation

src/gpu/glsl/GrGLSLGeometryProcessor.h

Index: src/gpu/glsl/GrGLSLGeometryProcessor.h
diff --git a/src/gpu/glsl/GrGLSLGeometryProcessor.h b/src/gpu/glsl/GrGLSLGeometryProcessor.h
index d403c8fc7fc195bd25a0c642ba5b192a1bd1f859..d1e715f78a7846c65935be341e6a3374a3a80f06 100644
--- a/src/gpu/glsl/GrGLSLGeometryProcessor.h
+++ b/src/gpu/glsl/GrGLSLGeometryProcessor.h
@@ -70,13 +70,6 @@ protected:
                         const TransformsIn&,
                         TransformsOut*);
 
-    // caller has emitted transforms via attributes
-    void emitTransforms(GrGLSLVertexBuilder*,
-                        GrGLSLVaryingHandler*,
-                        const char* localCoords,
-                        const TransformsIn& tin,
-                        TransformsOut* tout);
-
     struct GrGPArgs {
         // The variable used by a GP to store its position. It can be
         // either a vec2 or a vec3 depending on the presence of perspective.