Fix issue with cwd not being used to find the python interpreter paths

[rchiodo]

Addresses https://github.com/microsoft/pyright/issues/8367

It seems it's not necessary to remove the cwd for the sys or os modules. They can't be overridden by local versions and our existing code already excluded the cwd when finding other modules.

I tested this by:

• Creating an os folder and putting an __init__.py in it.
• Creating a sys folder and putting an __init__.py in it
• Running python, importing sys and os and trying to call the function in the __init__.py
• Neither would load my version
• Creating a json folder and putting an __init__.py in it.
• Python would load this json module though

Our interpreter search code is this:

import sys
import os, os.path
normalize = lambda p: os.path.normcase(os.path.normpath(p))
cwd = normalize(os.getcwd())
orig_sys_path = [p for p in sys.path if p != ""]
sys.path[:] = [p for p in sys.path if p != "" and normalize(p) != cwd]
json.dump(dict(path=orig_sys_path, prefix=sys.prefix), sys.stdout)

Running that code does not load the custom json module though.

[github-actions[bot]]

According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅

[github-actions[bot]]

According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅