Removed code related to default session

qiskit_ibm_provider/session.py

@@ -102,33 +102,3 @@ def active(self) -> bool:
     def close(self) -> None:
         """Set the session._active status to False"""
         self._active = False
-
-    def __enter__(self) -> "Session":
-        set_cm_session(self)
-        return self
-
-    def __exit__(
-        self,
-        exc_type: Optional[Type[BaseException]],
-        exc_val: Optional[BaseException],
-        exc_tb: Optional[TracebackType],
-    ) -> None:
-        set_cm_session(None)
-
-
-# Default session
-_DEFAULT_SESSION: ContextVar[Optional[Session]] = ContextVar(
-    "_DEFAULT_SESSION", default=None
-)
-_IN_SESSION_CM: ContextVar[bool] = ContextVar("_IN_SESSION_CM", default=False)
-
-
-def set_cm_session(session: Optional[Session]) -> None:
-    """Set the context manager session."""
-    _DEFAULT_SESSION.set(session)
-    _IN_SESSION_CM.set(session is not None)
-
-
-def get_cm_session() -> Session:
-    """Return the context managed session."""
-    return _DEFAULT_SESSION.get()