Remove unused env files + fix root import for local runs

[nshadskiy]

This pull request removes several Conda environment YAML files and refactors the command construction in the run method of processor/tasks/CROWNMain.py to use wrap_executable_command.

[moritzmolch]

General comments:

• In the .env file, we define the python version to be 3.9.*, while the LCG stack that we currently use in CROWN already supports python 3.12. We should think about upgrading the python version in the KingMaker environment.

• We create a separate environment conda env, meaning that we have two conda environments in the image: base and env. To my understanding, there is no reason why we need to create a encapsulated environment inside the container. We could just use the base environment.