chore(metrics-summaries): Remove metrics summaries queries and endpoints

[phacops]

The metrics summaries are not needed anymore since we shut down DDM.

This will remove the query layer and endpoints used by the frontend to list samples associated with metrics.

https://github.com/getsentry/team-ingest/issues/544

[sentry-io]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: src/sentry/utils/snuba.py

Function	Unhandled Issue
_apply_cache_and_build_results	RateLimitExceeded: Query on could not be run due to allocation policies, info: {'details': {'ConcurrentRateLimitAllo... ... Event Count: 11
_apply_cache_and_build_results	RateLimitExceeded: Query on could not be run due to allocation policies, info: {'details': {'BytesScannedRejectingPo... ... Event Count: 7

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[codecov]

❌ 7 Tests Failed:

Tests completed	Failed	Passed	Skipped
23100	7	23093	215

View the top 3 failed tests by shortest run time

tests.sentry.api.endpoints.test_organization_metrics.OrganizationMetricsPermissionTest::test_access_with_wrong_permission_scopes

Stack Traces | 4.02s run time

#x1B[1m#x1B[.../api/endpoints/test_organization_metrics.py#x1B[0m:93: in test_access_with_wrong_permission_scopes
    response = self.send_request(self.organization, token, method, endpoint, *rest)
#x1B[1m#x1B[.../api/endpoints/test_organization_metrics.py#x1B[0m:83: in send_request
    url = reverse(endpoint, args=(organization.slug,) + args)
#x1B[1m#x1B[31m.venv/lib/python3.12.../django/urls/base.py#x1B[0m:88: in reverse
    return resolver._reverse_with_prefix(view, prefix, *args, **kwargs)
#x1B[1m#x1B[31m.venv/lib/python3.12.../django/urls/resolvers.py#x1B[0m:831: in _reverse_with_prefix
    raise NoReverseMatch(msg)
#x1B[1m#x1B[31mE   django.urls.exceptions.NoReverseMatch: Reverse for 'sentry-api-0-organization-metrics-samples' not found. 'sentry-api-0-organization-metrics-samples' is not a valid view function or pattern name.#x1B[0m

tests.sentry.api.endpoints.test_organization_metrics.OrganizationMetricsPermissionTest::test_access_of_another_organization

Stack Traces | 6.29s run time

#x1B[1m#x1B[.../api/endpoints/test_organization_metrics.py#x1B[0m:104: in test_access_of_another_organization
    response = self.send_request(self.organization, token, method, endpoint, *rest)
#x1B[1m#x1B[.../api/endpoints/test_organization_metrics.py#x1B[0m:83: in send_request
    url = reverse(endpoint, args=(organization.slug,) + args)
#x1B[1m#x1B[31m.venv/lib/python3.12.../django/urls/base.py#x1B[0m:88: in reverse
    return resolver._reverse_with_prefix(view, prefix, *args, **kwargs)
#x1B[1m#x1B[31m.venv/lib/python3.12.../django/urls/resolvers.py#x1B[0m:831: in _reverse_with_prefix
    raise NoReverseMatch(msg)
#x1B[1m#x1B[31mE   django.urls.exceptions.NoReverseMatch: Reverse for 'sentry-api-0-organization-metrics-samples' not found. 'sentry-api-0-organization-metrics-samples' is not a valid view function or pattern name.#x1B[0m

tests.sentry.api.endpoints.test_organization_metrics.OrganizationMetricsPermissionTest::test_access_with_permissions

Stack Traces | 7s run time

#x1B[1m#x1B[.../api/endpoints/test_organization_metrics.py#x1B[0m:112: in test_access_with_permissions
    response = self.send_request(self.organization, token, method, endpoint, *rest)
#x1B[1m#x1B[.../api/endpoints/test_organization_metrics.py#x1B[0m:83: in send_request
    url = reverse(endpoint, args=(organization.slug,) + args)
#x1B[1m#x1B[31m.venv/lib/python3.12.../django/urls/base.py#x1B[0m:88: in reverse
    return resolver._reverse_with_prefix(view, prefix, *args, **kwargs)
#x1B[1m#x1B[31m.venv/lib/python3.12.../django/urls/resolvers.py#x1B[0m:831: in _reverse_with_prefix
    raise NoReverseMatch(msg)
#x1B[1m#x1B[31mE   django.urls.exceptions.NoReverseMatch: Reverse for 'sentry-api-0-organization-metrics-samples' not found. 'sentry-api-0-organization-metrics-samples' is not a valid view function or pattern name.#x1B[0m

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