Clean up OWNERS

Remove OWNERS entry for person no longer working on the project.

Test: N/A
Change-Id: Icbfba05512e1e1c85593ed58ef88ff15b6673ecc
diff --git a/keystore2/OWNERS b/keystore2/OWNERS
index 6b1a95b..bf9d61b 100644
--- a/keystore2/OWNERS
+++ b/keystore2/OWNERS
@@ -5,5 +5,4 @@
 hasinitg@google.com
 jbires@google.com
 sethmo@google.com
-trong@google.com
 swillden@google.com