reset_database only drops trulens tables

[sfc-gh-chu]

Description

reset_database() would previously drop all tables in a given database/schema. This fix would only drop trulens-related tables

Other details good to know for developers

Please include any other details of this change useful for TruLens developers.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to
  not work as expected)
• New Tests
• This change includes re-generated golden test results
• This change requires a documentation update

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Important

reset_database() in sqlalchemy.py now drops only trulens-related tables, enhancing data safety.

• Behavior:
  • reset_database() in sqlalchemy.py now drops only trulens-related tables instead of all tables in the database.
  • Collects tables from self.orm.registry and drops them using meta.drop_all.
• Misc:
  • Removed commented-out code in reset_database() method.

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