test_platform: Deduplicate OWNERS file

BUG=None
TEST=None

Change-Id: Ia2e30f0425dbe2b4987ea073118a5729387dc349
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2375845
Tested-by: Prathmesh Prabhu <pprabhu@google.com>
Auto-Submit: Prathmesh Prabhu <pprabhu@google.com>
Reviewed-by: Sean Abraham <seanabraham@chromium.org>
Commit-Queue: Sean Abraham <seanabraham@chromium.org>
diff --git a/src/test_platform/OWNERS b/src/test_platform/OWNERS
index 850202a..eb96d62 100644
--- a/src/test_platform/OWNERS
+++ b/src/test_platform/OWNERS
@@ -1,8 +1 @@
-jkop@chromium.org
-jkop@google.com
-linxinan@chromium.org
-linxinan@google.com
-pprabhu@chromium.org
-pprabhu@google.com
-zamorzaev@chromium.org
-zamorzaev@google.com
+include chromiumos/chromite:/OWNERS.testplatform