[MNT] removed separate mlflow dependencies and testing

[aiwalter]

fixes #25

[lmmentel]

Are the mlfow related tests going to be run under the general testing call now?

[aiwalter]

good question, I cant find where they where excluded before but has to be somewhere? also why is not all CI/CD running, hm

[lmmentel]

It seems the tests for mlflow use AutoARIMA and require pmdarima to be installed. There are some unnecessary dependencies in the testing without soft deps and mlfow tests should be excluded from there.

[lmmentel]

LGTM!