Remove Hub and related code for good.

[antonpirker]

Finally it is the time to delete the Hub for good.

---

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[codecov]

Test Failures Detected: Due to failing tests, we cannot provide coverage reports at this time.

❌ Failed Test Results:

Completed 10533 tests with 1 failed, 9152 passed and 1380 skipped.

View the full list of failed tests

py3.13-common

• Class name: tests.tracing.test_decorator
  Test name: test_trace_decorator_no_trx
  
  

  tests/tracing/test_decorator.py:42: in test_trace_decorator_no_trx
      fake_debug.assert_called_once_with(
  .../hostedtoolcache/Python/3.13.0-rc..../x64/lib/python3.13/unittest/mock.py:988: in assert_called_once_with
      raise AssertionError(msg)
  E   AssertionError: Expected 'mock' to be called once. Called 5 times.
  E   Calls: [call('Cannot create a child span for %s. Please start a Sentry transaction before calling this function.', 'test_decorator.my_example_function'),
  E    call('Killing HTTP transport'),
  E    call('background worker got kill request'),
  E    call('Killing HTTP transport'),
  E    call('background worker got kill request')].

[sentrivana]

🎉 🎉 🎉