Remove Python 3.6 branches from typeshed (#8269)

stdlib/pdb.pyi

@@ -22,13 +22,7 @@ def run(statement: str, globals: dict[str, Any] | None = ..., locals: Mapping[st
 def runeval(expression: str, globals: dict[str, Any] | None = ..., locals: Mapping[str, Any] | None = ...) -> Any: ...
 def runctx(statement: str, globals: dict[str, Any], locals: Mapping[str, Any]) -> None: ...
 def runcall(func: Callable[_P, _T], *args: _P.args, **kwds: _P.kwargs) -> _T | None: ...
-
-if sys.version_info >= (3, 7):
-    def set_trace(*, header: str | None = ...) -> None: ...
-
-else:
-    def set_trace() -> None: ...
-
+def set_trace(*, header: str | None = ...) -> None: ...
 def post_mortem(t: TracebackType | None = ...) -> None: ...
 def pm() -> None: ...
 
@@ -167,7 +161,7 @@ class Pdb(Bdb, Cmd):
     complete_whatis = _complete_expression
     complete_display = _complete_expression
 
-    if sys.version_info >= (3, 7) and sys.version_info < (3, 11):
+    if sys.version_info < (3, 11):
         def _runmodule(self, module_name: str) -> None: ...
 
 # undocumented