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

src/effects/SkMagnifierImageFilter.cpp

Index: src/effects/SkMagnifierImageFilter.cpp
diff --git a/src/effects/SkMagnifierImageFilter.cpp b/src/effects/SkMagnifierImageFilter.cpp
index 9ab18a7582ccf975d60458b2f0e04e3fde444e6b..517e31d2505470c42a1d3b5970c5d1226281b606 100644
--- a/src/effects/SkMagnifierImageFilter.cpp
+++ b/src/effects/SkMagnifierImageFilter.cpp
@@ -337,7 +337,7 @@ sk_sp<SkSpecialImage> SkMagnifierImageFilter::onFilterImage(SkSpecialImage* sour
             return nullptr;
         }
 
-        return DrawWithFP(context, std::move(fp), bounds, source->internal_getProxy());
+        return DrawWithFP(context, std::move(fp), bounds);
     }
 #endif
 
@@ -408,8 +408,7 @@ sk_sp<SkSpecialImage> SkMagnifierImageFilter::onFilterImage(SkSpecialImage* sour
 
     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);
 }