Revert "Decode key returned from db into unicode."

This reverts commit 9e63f0b303951da12dd4d96e9842b6c191763522
diff --git a/update_gerrit_users.py b/update_gerrit_users.py
index 8fd3a28..15baaa9 100755
--- a/update_gerrit_users.py
+++ b/update_gerrit_users.py
@@ -335,7 +335,7 @@
 
       cur.execute("""select ssh_public_key from account_ssh_keys where
         account_id = %s""", account_id)
-      db_keys = [r[0].strip().decode('utf-8') for r in cur.fetchall()]
+      db_keys = [r[0].strip() for r in cur.fetchall()]
       if key.strip() not in db_keys:
 
         cur.execute("""select max(seq)+1 from account_ssh_keys