Disable set_callback

pwman/data/convertdb.py

@@ -266,7 +266,7 @@ class PwmanConvertDB(DBConverter):
 
         self.db = SQLiteDatabaseReader()
         enc = CryptoEngine.get()
-        enc.set_callback(CLICallback())
+        enc.callback = CLICallback()
         self.db.open()
         self.oldnodes = self.db.listnodes()
         self.oldnodes = self.db.getnodes(self.oldnodes)
@@ -299,7 +299,7 @@ class PwmanConvertKey(DBConverter):
 
     def read_old_db(self):
         enc = CryptoEngine.get()
-        enc.set_callback(CLICallback())
+        enc.callback = CLICallback()
         self.db.open()
         self.oldnodes = self.db.listnodes()
         self.oldnodes = self.db.getnodes(self.oldnodes)

pwman/util/crypto.py

@@ -229,11 +229,11 @@ class CryptoEngine(object):
         """
         return self._keycrypted
 
-    def set_callback(self, callback):
-        """
-        set the callback function
-        """
-        self._callback = callback
+    # def set_callback(self, callback):
+    #     """
+    #     set the callback function
+    #     """
+    #     self._callback = callback
 
     @property
     def callback(self):