Set the new owners for textclassifier

Change-Id: I53fdc3a9d1ff0550376d9f6c5acf620f6619d24f
diff --git a/OWNERS b/OWNERS
index 6dc193d..62a72ae 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,6 +1,4 @@
 # Default code reviewers picked from top 3 or more developers.
 # Please update this list if you find better candidates.
-tonymak@google.com
-toki@google.com
-licha@google.com
-joannechung@google.com
+carbokuo@google.com
+wangqi@google.com