Remove the entire sentry_sdk.hub module. sentry_sdk.hub.Hub in particular needs to be deleted, as well as anything else in sentry_sdk.hub which is only used by sentry_sdk.hub.Hub. If there is any logic in sentry_sdk.hub which we still need to keep (hopefully there is none), then this needs to be moved somewhere else before starting this issue.

Also, remove all tests testing the removed features.

Do in potel-base