turning off twig debug in preproduction

web/sites/default/services.pantheon.preproduction.yml

@@ -12,7 +12,7 @@
 #
 parameters:
   twig.config:
-    debug: true
+    debug: false
   session.storage.options:
     # Set session lifetime (in seconds), i.e. the time from the user's last
     # visit to the active session may be deleted by the session garbage