tkinter Pack,Grid,Place: delete commented-out aliases, explain in allowlist

[Akuli]

Tkinter is complicated. It does this at runtime:

class Misc:
    ...
    def grid_rowconfigure(self, ...): ...
    rowconfigure = grid_rowconfigure
    def grid_size(self): ...
    size = grid_size
    ...

class Grid:
    ...
    rowconfigure = grid_rowconfigure = Misc.grid_rowconfigure
    size = grid_size = Misc.grid_size
    ...

class BaseWidget(Misc):
    ...

class Widget(BaseWidget, Pack, Place, Grid):
    ...

The intent with rowconfigure = Misc.grid_rowconfigure is that you can do tkinter.Grid.rowconfigure(widget, blah) instead of widget.grid_rowconfigure(blah), but nobody seems to be doing that in practice.

It is even worse with some methods: each of Pack, Grid, Place and Misc has a method named configure, and they all do different things!

If someone wants to use the weird aliases of the methods, I can try to add them to the stubs, but for now I just want them all allowlisted.

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉