Prune departed users from OWNERS am: ad6d324bb1

Original change: https://android-review.googlesource.com/c/platform/external/libhevc/+/1883574

Change-Id: I6eda24953cbfa706033e0880146b7ee6fd988180
diff --git a/OWNERS b/OWNERS
index e2a19ce..e234552 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,4 +1,3 @@
 # owners for external/libhevc
 include platform/frameworks/av:/media/janitors/codec_OWNERS
-marcone@google.com
 essick@google.com