python/semanage: Remove redundant and broken moduleRecords.modify()

moduleRecords.modify() calls nonexistent function
semanage_module_update_file (maybe it should have been
semanage_module_upgrade_file which is now obsolete and calls
semanage_module_install_file) and the job of updating a module is done
by moduleRecords.add().

Signed-off-by: Vit Mojzis <vmojzis@redhat.com>

python/semanage/seobject.py

@@ -426,11 +426,6 @@ class moduleRecords(semanageRecords):
                     raise ValueError(_("Could not disable module %s") % m)
         self.commit()
 
-    def modify(self, file):
-        rc = semanage_module_update_file(self.sh, file)
-        if rc >= 0:
-            self.commit()
-
     def delete(self, module, priority):
         rc = semanage_set_default_priority(self.sh, priority)
         if rc < 0: