Force removal of broken symlink that ships with Perfetto

Bug: skia:13303
Change-Id: I2b439ba443c865b08c20aef586b85e3d311b7bc8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/543920
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
diff --git a/docker/skia-release/Dockerfile b/docker/skia-release/Dockerfile
index 173fd39..6ddcec8 100644
--- a/docker/skia-release/Dockerfile
+++ b/docker/skia-release/Dockerfile
@@ -53,6 +53,9 @@
   "-Wl,/usr/local/lib"  \n\
 ] ' > /tmp/skia/skia/out/Static/args.gn
 
+# TODO(nicolettep) Delete this manual removal of a broken symlink that comes with the Perfetto
+# checkout once the issue is addressed within the Perfetto respository itself.
+RUN rm -f /tmp/skia/skia/third_party/externals/perfetto/ui/src/gen
 # Build Skia.
 RUN cd /tmp/skia/skia \
   && ./bin/gn gen out/Static \