Remove venv creation for python package install stage

[T-Dynamos]

• Virtual environment creation is not required now as we are using our own custom pip now.
• This PR strictly prevents to install wrong arch modules like it was allowed previously causing issues like: Tiktoken is for EM_X86_64 | ImportError: dlopen failed () #3050
• It might break for some users which are dependent on this behavior.
• It also changes how setup.py runs and uses a more simplified approach.
• Now full compatible with native android packages on pypi like charset-normalizer are installable without recipes (it directly picks up android wheels from pypi)

[RobertFlatt]

Strangely using this pr and specifying one of chardet or charset-normalizer in requirements, appears to result in both in the build (yes I appclean'd in between).