BENCH: Remove unnecessary random seeds
- [x] tests added / passed
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them

We are implementing a common seed explained in https://asv.readthedocs.io/en/latest/writing_benchmarks.html.

Added a code check as well

thanks @mroeschke 