ref: Drop hub

Author: sentrivana

MIGRATION_GUIDE.md

@@ -13,6 +13,9 @@ Looking to upgrade from Sentry SDK 2.x to 3.x? Here's a comprehensive list of wh
 
 ## Removed
 
+- Removed the deprecated Hub class and all uses of hub throughout the SDK in arguments, options, etc. Use a scope instead.
+- Removed the `auto_session_tracing` decorator. Use `track_session` instead.
+
 ## Deprecated
 
 

sentry_sdk/__init__.py

@@ -8,7 +8,6 @@
 from sentry_sdk.api import *  # noqa # isort: skip
 
 __all__ = [  # noqa
-    "Hub",
     "Scope",
     "Client",
     "Transport",
@@ -66,6 +65,3 @@
 
 init_debug_support()
 del init_debug_support
-
-# circular imports
-from sentry_sdk.hub import Hub