Remove the formatting overrides

[ArBridgeman]

To upgrade from PTB 1.6.0 to 5.1.1 and avoid large file changes which would hinder other work, we introduced in #360 overrides in the noxfile.py for the nox session format:check and format:fix. These & their related code imports should be removed so that the transformers-extensions stays on top of the formatting features of the PTB.

Note that if it's desired to uncouple the many changes, it would be recommended to do the following:

• Update the noxfile.py so that _pyupgrade uses --py10-plus and execute format:fix -> this will update the types
• If additional changes have been added to the PTB format:fix (as determined by comparing the noxfile.py here to the PTB source code, then one could next introduce ruff into the _code_format option and execute format:fix -> this would removed unused imports
  -- please refer to the plethora of online information on how to prevent removing specific unused imports, but we have basic information at:
  https://exasol.github.io/python-toolbox/main/user_guide/features/formatting_code/troubleshooting.html#the-automatic-formatting-is-doing-x-but-we-shouldn-t-do-that-because-of-y
• Then, remove the overrides & execute format:fix again