Only suppress deprecation warning at MySQL connection

Author: eywalker

datajoint/connection.py

@@ -90,7 +90,7 @@ def connect(self):
         Connects to the database server.
         """
         with warnings.catch_warnings():
-            warnings.simplefilter("ignore")
+            warnings.filterwarnings('ignore', '.*deprecated.*')
             self._conn = client.connect(init_command=self.init_fun,
                                         sql_mode="NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,"
                                                  "STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION",