tests: Remove forked from Django tests

[alexander-alderman-webb]

Description

Issues

Reminders

• Please add tests to validate your changes, and lint your code using tox -e linters.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
23753	1	23752	1715

View the top 1 failed test(s) by shortest run time

tests.tracing.test_decorator::test_trace_decorator_async_no_trx

Stack Traces | 0.138s run time

tests/tracing/test_decorator.py:81: in test_trace_decorator_async_no_trx
    fake_debug.assert_called_once_with(
.../hostedtoolcache/Python/3.10.18.../x64/lib/python3.10/unittest/mock.py:940: in assert_called_once_with
    raise AssertionError(msg)
E   AssertionError: Expected 'mock' to be called once. Called 8 times.
E   Calls: [call('Cannot create a child span for %s. Please start a Sentry transaction before calling this function.', 'test_decorator.my_async_example_function'),
E    call('Cannot create a child span for %s. Please start a Sentry transaction before calling this function.', 'time.sleep'),
E    call('Cannot create a child span for %s. Please start a Sentry transaction before calling this function.', 'time.sleep'),
E    call('[Monitor] health check negative, downsampling with a factor of %d', 10),
E    call('Cannot create a child span for %s. Please start a Sentry transaction before calling this function.', 'time.sleep'),
E    call('Cannot create a child span for %s. Please start a Sentry transaction before calling this function.', 'time.sleep'),
E    call('[Monitor] health check negative, downsampling with a factor of %d', 10),
E    call('Cannot create a child span for %s. Please start a Sentry transaction before calling this function.', 'time.sleep')].

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