Add DIR_METADATA files to //fuchsia

Add Generate DIR_METADATA files and remove metadata from OWNERS
files for //fuchsia.

R=fdegans@chromium.org

Bug: 1113033
Change-Id: Ic16fee164424a34b4dd77c65aba1befce3a482bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2454303
Auto-Submit: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Reviewed-by: Fabrice de Gans-Riberi <fdegans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814453}

fuchsia/DIR_METADATA

+# Metadata information for this directory.
+#
+# For more information on DIR_METADATA files, see:
+#   https://source.chromium.org/chromium/infra/infra/+/master:go/src/infra/tools/dirmd/README.md
+#
+# For the schema of this file, see Metadata message:
+#   https://source.chromium.org/chromium/infra/infra/+/master:go/src/infra/tools/dirmd/proto/dir_metadata.proto
+
+monorail {
+  component: "Fuchsia"
+}
+team_email: "cr-fuchsia@chromium.org"
+os: FUCHSIA
\ No newline at end of file

fuchsia/OWNERS

@@ -2,7 +2,3 @@ file://build/fuchsia/OWNERS
 
 per-file SECURITY_OWNERS=set noparent
 per-file SECURITY_OWNERS=file://fuchsia/SECURITY_OWNERS
-
-# COMPONENT: Fuchsia
-# OS: Fuchsia
-# TEAM: cr-fuchsia@chromium.org