CLOUDSTACK-9266: Make deleting static routes in private gw work

Author: remibergsma

systemvm/patches/debian/config/opt/cloud/bin/cs_staticroutes.py

@@ -21,13 +21,5 @@
 def merge(dbag, staticroutes):
     for route in staticroutes['routes']:
         key = route['network']
-        revoke = route['revoke']
-        if revoke:
-            try:
-                del dbag[key]
-            except KeyError:
-                pass
-        else:
-            dbag[key] = route
-
+        dbag[key] = route
     return dbag