Begin removing deprecated (and now, unused) ImageFilter code paths

src/effects/SkDisplacementMapEffect.cpp

Index: src/effects/SkDisplacementMapEffect.cpp
diff --git a/src/effects/SkDisplacementMapEffect.cpp b/src/effects/SkDisplacementMapEffect.cpp
index b715f6a4f3b5635d65cf0fa4c07eba7962584b72..c52b9587462e9b5ac304d9ad2887961f7b35cc42 100644
--- a/src/effects/SkDisplacementMapEffect.cpp
+++ b/src/effects/SkDisplacementMapEffect.cpp
@@ -355,8 +355,7 @@ sk_sp<SkSpecialImage> SkDisplacementMapEffect::onFilterImage(SkSpecialImage* sou
 
         offset->fX = bounds.left();
         offset->fY = bounds.top();
-        return SkSpecialImage::MakeFromGpu(source->internal_getProxy(),
-                                           SkIRect::MakeWH(bounds.width(), bounds.height()),
+        return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
                                            kNeedNewImageUniqueID_SpecialImage,
                                            dst);
     }
@@ -393,8 +392,7 @@ sk_sp<SkSpecialImage> SkDisplacementMapEffect::onFilterImage(SkSpecialImage* sou
 
     offset->fX = bounds.left();
     offset->fY = bounds.top();
-    return SkSpecialImage::MakeFromRaster(source->internal_getProxy(),
-                                          SkIRect::MakeWH(bounds.width(), bounds.height()),
+    return SkSpecialImage::MakeFromRaster(SkIRect::MakeWH(bounds.width(), bounds.height()),
                                           dst);
 }