Add DIR_METADATA files to //courgette

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

R=huangs@chromium.org

Bug: 1113033
Change-Id: Ia24b5ca4b977524c79c245e78f14d86981aa029d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2454274
Auto-Submit: Edward Lesmes <ehmaldonado@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814782}

courgette/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: "EnterpriseRetailMode"
+}
\ No newline at end of file

courgette/OWNERS

@@ -2,5 +2,3 @@ huangs@chromium.org
 sra@chromium.org
 tommi@chromium.org
 wfh@chromium.org
-
-# COMPONENT: EnterpriseRetailMode