ref(eap) Remove old attributes tables

[evanh]

The original meta attribute tables were replaced with slightly different versions. Remove the old tables.

[colin-sentry]

isn't this in migration 5 already?

[codecov[bot]]

:x: 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
1234	1	1233	3

View the top 1 failed tests by shortest run time

tests.migrations.test_runner test_reverse_all

Stack Traces | 6.71s run time

Traceback (most recent call last):
  File ".../tests/migrations/test_runner.py", line 328, in test_reverse_all
    runner.reverse_migration(migration, force=True)
  File ".../snuba/migrations/runner.py", line 382, in reverse_migration
    self._reverse_migration_impl(migration_key)
  File ".../snuba/migrations/runner.py", line 439, in _reverse_migration_impl
    migration.backwards(context, dry_run)
  File ".../snuba/migrations/migration.py", line 181, in backwards
    ops = self.backwards_ops()
          ^^^^^^^^^^^^^^^^^^^^
  File ".../snuba_migrations/events_analytics_platform/0016_remove_old_span_attribute_table.py", line 53, in backwards_ops
    "index_granularity": self.granularity,
                         ^^^^^^^^^^^^^^^^
AttributeError: 'Migration' object has no attribute 'granularity'

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[github-actions[bot]]

This PR has a migration; here is the generated SQL

-- start migrations

-- forward migration events_analytics_platform : 0016_remove_old_span_attribute_table
Local op: DROP TABLE IF EXISTS spans_attributes_meta_local;
Distributed op: DROP TABLE IF EXISTS spans_attributes_meta_dist;
-- end forward migration events_analytics_platform : 0016_remove_old_span_attribute_table




-- backward migration events_analytics_platform : 0016_remove_old_span_attribute_table
-- end backward migration events_analytics_platform : 0016_remove_old_span_attribute_table