Remove f-strings brain (#2484)

The line number issue for FormattedValue.value (Name node) was
solved in CPython shortly after the brain was contributed.

Author: jacobtylerwalls

astroid/brain/brain_fstrings.py

@@ -38,7 +38,6 @@ def register_all_brains(manager: AstroidManager) -> None:
         brain_dataclasses,
         brain_datetime,
         brain_dateutil,
-        brain_fstrings,
         brain_functools,
         brain_gi,
         brain_hashlib,
@@ -91,7 +90,6 @@ def register_all_brains(manager: AstroidManager) -> None:
     brain_dataclasses.register(manager)
     brain_datetime.register(manager)
     brain_dateutil.register(manager)
-    brain_fstrings.register(manager)
     brain_functools.register(manager)
     brain_gi.register(manager)
     brain_hashlib.register(manager)

astroid/brain/helpers.py

@@ -1077,23 +1077,6 @@ def test_re_pattern_subscriptable(self):
         assert isinstance(inferred2.getattr("__class_getitem__")[0], nodes.FunctionDef)
 
 
-class BrainFStrings(unittest.TestCase):
-    def test_no_crash_on_const_reconstruction(self) -> None:
-        node = builder.extract_node(
-            """
-        max_width = 10
-
-        test1 = f'{" ":{max_width+4}}'
-        print(f'"{test1}"')
-
-        test2 = f'[{"7":>{max_width}}:0]'
-        test2
-        """
-        )
-        inferred = next(node.infer())
-        self.assertIs(inferred, util.Uninferable)
-
-
 class BrainNamedtupleAnnAssignTest(unittest.TestCase):
     def test_no_crash_on_ann_assign_in_namedtuple(self) -> None:
         node = builder.extract_node(