meta-google: Remove ztai from OWNER list

Change-Id: I351d8bfc8ac46b3317677d0893eabe2522f1c840
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/meta-google/OWNERS b/meta-google/OWNERS
index 44cdb49..1972513 100644
--- a/meta-google/OWNERS
+++ b/meta-google/OWNERS
@@ -5,5 +5,4 @@
 - edtanous@google.com
 - brandonkim@google.com
 - wltu@google.com
-- ztai@google.com
 - nanzhoumails@gmail.com