Remove transactional delete

This just doesn't work due to the darn limit on recursive deletes in
transactions.

daemon-common/zkhandler.py

@@ -218,18 +218,16 @@ class ZKHandler(object):
         if type(keys) is not list:
             keys = [keys]
 
-        transaction = self.zk_conn.transaction()
-
         for key in keys:
-            transaction.delete(key, recursive=recursive)
-
+            if self.exists(key):
                 try:
-            transaction.commit()
-            return True
+                    self.zk_conn.delete(key, recursive=recursive)
                 except Exception as e:
-            self.log("ZKHandler error: Failed to commit transaction: {}".format(e), state='e')
+                    self.log("ZKHandler error: Failed to delete key {}: {}".format(key, e), state='e')
                     return False
 
+        return True
+
     def children(self, key):
         """
         Lists all children of a key