Remove ActiveX Scripting for Internet Explorer

[Avasam]

As found in https://github.com/mhammond/pywin32/pull/2448#discussion_r1904862001 According to https://github.com/mhammond/pywin32/blob/034969e214e9353db1409b25c8ca61e1ddf8b4a1/com/win32com/readme.html#L62-L63

Python only supports "trusted" execution hosts - thus, it will no longer work as an engine inside IE (Python itself no longer has a restricted execution environment).

So this PR removes doc, comments and code specific to running ActiveX Scripting in Internet Explorer.

I might be misunderstanding something, but I haven't been enable to get <SCRIPT LANGUAGE="Python"> working on IE11. Please let me know if any of these should actually be kept.