Revert "Add owners block for migration"

The migration is now done.
Modification in revert: kept tests/OWNERS deleted.

Bug: 189375701
Change-Id: Ie105882fc61f7395f2e37711d4849c63e1f7199d

OWNERS

-# Owners block: ongoing migration
+codewiz@google.com
+jchalard@google.com
+junyulai@google.com
+lorenzo@google.com
+maze@google.com
 reminv@google.com
-
-#codewiz@google.com
-#jchalard@google.com
-#junyulai@google.com
-#lorenzo@google.com
-#maze@google.com
-#reminv@google.com
-#satk@google.com
+satk@google.com

Tethering/OWNERS

-# include platform/packages/modules/NetworkStack/:/OWNERS
-
-# Owners block: ongoing migration
-# markchien@google.com
-reminv@google.com
\ No newline at end of file
+include platform/packages/modules/NetworkStack/:/OWNERS
+markchien@google.com