Chore: clean up redundant annotators

[georgesittas]

No description provided.

[github-actions]

SQLGlot Integration Test Results

Comparing:

• this branch (sqlglot:jo/clean_up_annotators, sqlglot version: jo/clean_up_annotators)
• baseline (main, sqlglot version: 28.6.1.dev28)

⚠️ Limited to dialects: bigquery, snowflake

By Dialect

dialect	main	sqlglot:jo/clean_up_annotators	difference	links
bigquery -> bigquery	2592/2624 passed (98.8%)	2592/2624 passed (98.8%)	No change	full result / delta
bigquery -> duckdb	1847/2623 passed (70.4%)	1847/2623 passed (70.4%)	No change	full result / delta
snowflake -> duckdb	615/847 passed (72.6%)	615/847 passed (72.6%)	No change	full result / delta
snowflake -> snowflake	847/847 passed (100.0%)	847/847 passed (100.0%)	No change	full result / delta

Overall

main: 6941 total, 5901 passed (pass rate: 85.0%), sqlglot version: 28.6.1.dev28

sqlglot:jo/clean_up_annotators: 6941 total, 5901 passed (pass rate: 85.0%), sqlglot version: jo/clean_up_annotators

Difference: No change