gh-96844: Improve error message of list.remove

[corona10]

• Issue: Show value in error of list.remove #96844

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[corona10]

Concern about large input -> #96844 (comment)
: It was already used for list.index method so that it will not be a issue

>>> a = []
>>> a.index(42)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: 42 is not in list

[vstinner]

LGTM. I agree with the rationale on error message length in the issue. Maybe we can limit the error message length, but that's out of the scope of this minor change.