Remove Python 3.6 branches from typeshed (#8269)

stdlib/os/__init__.pyi

@@ -388,13 +388,8 @@ class DirEntry(Generic[AnyStr]):
     if sys.version_info >= (3, 9):
         def __class_getitem__(cls, item: Any) -> GenericAlias: ...
 
-if sys.version_info >= (3, 7):
-    _StatVfsTuple: TypeAlias = tuple[int, int, int, int, int, int, int, int, int, int, int]
-else:
-    _StatVfsTuple: TypeAlias = tuple[int, int, int, int, int, int, int, int, int, int]
-
 @final
-class statvfs_result(structseq[int], _StatVfsTuple):
+class statvfs_result(structseq[int], tuple[int, int, int, int, int, int, int, int, int, int, int]):
     if sys.version_info >= (3, 10):
         __match_args__: Final = (
             "f_bsize",
@@ -428,9 +423,8 @@ class statvfs_result(structseq[int], _StatVfsTuple):
     def f_flag(self) -> int: ...
     @property
     def f_namemax(self) -> int: ...
-    if sys.version_info >= (3, 7):
-        @property
-        def f_fsid(self) -> int: ...
+    @property
+    def f_fsid(self) -> int: ...
 
 # ----- os function stubs -----
 def fsencode(filename: StrOrBytesPath) -> bytes: ...
@@ -595,13 +589,7 @@ def close(fd: int) -> None: ...
 def closerange(__fd_low: int, __fd_high: int) -> None: ...
 def device_encoding(fd: int) -> str | None: ...
 def dup(__fd: int) -> int: ...
-
-if sys.version_info >= (3, 7):
-    def dup2(fd: int, fd2: int, inheritable: bool = ...) -> int: ...
-
-else:
-    def dup2(fd: int, fd2: int, inheritable: bool = ...) -> None: ...
-
+def dup2(fd: int, fd2: int, inheritable: bool = ...) -> int: ...
 def fstat(fd: int) -> stat_result: ...
 def ftruncate(__fd: int, __length: int) -> None: ...
 def fsync(fd: FileDescriptorLike) -> None: ...
@@ -636,13 +624,12 @@ if sys.platform != "win32":
     if sys.platform != "darwin":
         if sys.version_info >= (3, 10):
             RWF_APPEND: int  # docs say available on 3.7+, stubtest says otherwise
-        if sys.version_info >= (3, 7):
-            def preadv(__fd: int, __buffers: Iterable[bytes], __offset: int, __flags: int = ...) -> int: ...
-            def pwritev(__fd: int, __buffers: Iterable[bytes], __offset: int, __flags: int = ...) -> int: ...
-            RWF_DSYNC: int
-            RWF_SYNC: int
-            RWF_HIPRI: int
-            RWF_NOWAIT: int
+        def preadv(__fd: int, __buffers: Iterable[bytes], __offset: int, __flags: int = ...) -> int: ...
+        def pwritev(__fd: int, __buffers: Iterable[bytes], __offset: int, __flags: int = ...) -> int: ...
+        RWF_DSYNC: int
+        RWF_SYNC: int
+        RWF_HIPRI: int
+        RWF_NOWAIT: int
     @overload
     def sendfile(out_fd: int, in_fd: int, offset: int | None, count: int) -> int: ...
     @overload
@@ -742,21 +729,12 @@ class _ScandirIterator(Iterator[DirEntry[AnyStr]], AbstractContextManager[_Scand
 
 @overload
 def scandir(path: None = ...) -> _ScandirIterator[str]: ...
-
-if sys.version_info >= (3, 7):
-    @overload
-    def scandir(path: int) -> _ScandirIterator[str]: ...
-
+@overload
+def scandir(path: int) -> _ScandirIterator[str]: ...
 @overload
 def scandir(path: GenericPath[AnyStr]) -> _ScandirIterator[AnyStr]: ...
 def stat(path: _FdOrAnyPath, *, dir_fd: int | None = ..., follow_symlinks: bool = ...) -> stat_result: ...
 
-if sys.version_info < (3, 7):
-    @overload
-    def stat_float_times() -> bool: ...
-    @overload
-    def stat_float_times(__newvalue: bool) -> None: ...
-
 if sys.platform != "win32":
     def statvfs(path: _FdOrAnyPath) -> statvfs_result: ...  # Unix only
 
@@ -783,34 +761,19 @@ def walk(
 ) -> Iterator[tuple[AnyStr, list[AnyStr], list[AnyStr]]]: ...
 
 if sys.platform != "win32":
-    if sys.version_info >= (3, 7):
-        @overload
-        def fwalk(
-            top: StrPath = ...,
-            topdown: bool = ...,
-            onerror: _OnError | None = ...,
-            *,
-            follow_symlinks: bool = ...,
-            dir_fd: int | None = ...,
-        ) -> Iterator[tuple[str, list[str], list[str], int]]: ...
-        @overload
-        def fwalk(
-            top: bytes,
-            topdown: bool = ...,
-            onerror: _OnError | None = ...,
-            *,
-            follow_symlinks: bool = ...,
-            dir_fd: int | None = ...,
-        ) -> Iterator[tuple[bytes, list[bytes], list[bytes], int]]: ...
-    else:
-        def fwalk(
-            top: StrPath = ...,
-            topdown: bool = ...,
-            onerror: _OnError | None = ...,
-            *,
-            follow_symlinks: bool = ...,
-            dir_fd: int | None = ...,
-        ) -> Iterator[tuple[str, list[str], list[str], int]]: ...
+    @overload
+    def fwalk(
+        top: StrPath = ...,
+        topdown: bool = ...,
+        onerror: _OnError | None = ...,
+        *,
+        follow_symlinks: bool = ...,
+        dir_fd: int | None = ...,
+    ) -> Iterator[tuple[str, list[str], list[str], int]]: ...
+    @overload
+    def fwalk(
+        top: bytes, topdown: bool = ..., onerror: _OnError | None = ..., *, follow_symlinks: bool = ..., dir_fd: int | None = ...
+    ) -> Iterator[tuple[bytes, list[bytes], list[bytes], int]]: ...
     if sys.platform == "linux":
         def getxattr(path: _FdOrAnyPath, attribute: StrOrBytesPath, *, follow_symlinks: bool = ...) -> bytes: ...
         def listxattr(path: _FdOrAnyPath | None = ..., *, follow_symlinks: bool = ...) -> list[str]: ...
@@ -999,7 +962,7 @@ if sys.platform == "linux":
 
 def urandom(__size: int) -> bytes: ...
 
-if sys.version_info >= (3, 7) and sys.platform != "win32":
+if sys.platform != "win32":
     def register_at_fork(
         *,
         before: Callable[..., Any] | None = ...,