Remove Python E2E canary tests. (#178)

*Issue #, if available:*

*Description of changes:*
Remove Python E2E canary tests since it is already migrated to
[aws-application-signals-test-framework](https://github.com/aws-observability/aws-application-signals-test-framework)
repo.

Main build workflow tested:
https://github.com/aws-observability/aws-otel-python-instrumentation/actions/runs/8914090859

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Author: zzhlogin