Remove f-strings brain

[jacobtylerwalls]

Type of Changes

	Type
✓	🔨 Refactoring

Description

The f-string brain rewrites line numbers for FormattedValue.value (a Name node) because of a brief period where the line numbers were incorrect.

The line number issue was solved in CPython shortly after the brain was contributed, see python/cpython#74650.

Demo

>>> from astroid import extract_node
>>> node = extract_node("""
... x = 'x'
... y = f'{x}'
... """)
>>> node.value
<JoinedStr l.3 at 0x104843fe0>
>>> node.value.values
[<FormattedValue l.3 at 0x1048600b0>]
>>> node.value.values[0].value
<Name.x l.3 at 0x104860110>

[Pierre-Sassoulas]

Nice !