[ADAP-868] [Bug] Remove unused mypy ignore

[Fokko]

Is this a new bug in dbt-spark?

• I believe this is a new bug in dbt-spark
• I have searched the existing issues, and I could not find an existing issue for this bug

Current Behavior

Mypy is complaining

Expected Behavior

Happy mypy

Steps To Reproduce

Run pre-commit with mypy

Relevant log output

check yaml...............................................................Passed
check json...........................................(no files to check)Skipped
fix end of files.........................................................Passed
trim trailing whitespace.................................................Passed
check for case conflicts.................................................Passed
black....................................................................Passed
flake8...................................................................Passed
mypy.....................................................................Failed
- hook id: mypy
- exit code: 1

dbt/adapters/spark/column.py:12: error: Unused "type: ignore" comment  [unused-ignore]
Found 1 error in 1 file (checked 8 source files)

Environment

- OS:
- Python:
- dbt-core:
- dbt-spark:

Additional Context

No response

[dataders]

resolved by: #880