adjustments to fix issues with caller_name and init the app a couple of times

Author: BSd3v

dash/dash.py

@@ -567,9 +567,6 @@ def __init__(  # pylint: disable=too-many-statements, too-many-branches
             backend_cls = get_backend(inferred_backend)
             self.backend = backend_cls()
             self.server = server
-            # Update caller_name from server's name attribute if available
-            if hasattr(server, "name"):
-                caller_name = server.name
         else:
             # No server instance provided, create backend and let backend create server
             self.backend = backend_cls()
@@ -703,9 +700,6 @@ def __init__(  # pylint: disable=too-many-statements, too-many-branches
         # tracks internally if a function already handled at least one request.
         self._got_first_request = {"pages": False, "setup_server": False}
 
-        if self.server is not None:
-            self.init_app()
-
         self.logger.setLevel(logging.INFO)
 
         if self.__class__.__name__ == "JupyterDash":