remove/deprecate SkBitmap::getTexture, as it now always returns false

src/gpu/SkGr.cpp

Index: src/gpu/SkGr.cpp
diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index 452218f517b97d5440c6eb967d2f9a22aeda9782..635f81a64e4829d072c98e51ae77d55f4b9bba9c 100644
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -421,10 +421,6 @@ GrTexture* GrUploadMipMapToTexture(GrContext* ctx, const SkImageInfo& info,
 GrTexture* GrRefCachedBitmapTexture(GrContext* ctx, const SkBitmap& bitmap,
                                     const GrTextureParams& params,
                                     SkSourceGammaTreatment gammaTreatment) {
-    if (bitmap.getTexture()) {
-        return GrBitmapTextureAdjuster(&bitmap).refTextureSafeForParams(params, gammaTreatment,
-                                                                        nullptr);
-    }
     return GrBitmapTextureMaker(ctx, bitmap).refTextureForParams(params, gammaTreatment);
 }