Revert "[build] modernize build-backend: setuptools.build_meta:__legacy__ -> setuptools.build_meta (#155998)"

This reverts commit 404008e3efdabeaf5b140a3aff77131461c33a0a.

Reverted https://github.com/pytorch/pytorch/pull/155998 on behalf of https://github.com/malfet due to Broke inductor_cpp, wrapper see e472daa809/1 ([comment](https://github.com/pytorch/pytorch/pull/155998#issuecomment-3032915058))

MANIFEST.in

@@ -1,50 +1,31 @@
-# Reference: https://setuptools.pypa.io/en/latest/userguide/miscellaneous.html
-
-# Include source files in SDist
+include MANIFEST.in
 include CMakeLists.txt
-include *.bzl *.bazel .bazel* BUILD *.BUILD BUILD.* WORKSPACE
-include BUCK BUCK.*
-include requirements*.txt
-include version.txt
-include [Mm]akefile *.[Mm]akefile [Mm]akefile.*
-include [Dd]ockerfile *.[Dd]ockerfile [Dd]ockerfile.* .dockerignore
-graft android
-graft aten
-graft binaries
-graft c10
-graft caffe2
-graft cmake
-graft functorch
-graft third_party
-graft tools
-graft torch
-graft torchgen
-# FIXME: torch-xla codegen build failure if include this file in wheel
-exclude torchgen/BUILD.bazel
-
-# Misc files and directories in SDist
-include *.md
 include CITATION.cff
-include LICENSE NOTICE
-include mypy*.ini
-graft benchmarks
-graft docs
-graft mypy_plugins
-graft scripts
-
-# Misc files needed for custom setuptools command
-include .gitignore
+include LICENSE
+include NOTICE
 include .gitmodules
-
-# Include test suites in SDist
-graft test
-include pytest.ini
-include .coveragerc
-
-# Prune generated/compiled files
-prune torchgen/packaged
+include build_variables.bzl
+include mypy.ini
+include requirements.txt
+include ufunc_defs.bzl
+include version.txt
+recursive-include android *.*
+recursive-include aten *.*
+recursive-include binaries *.*
+recursive-include c10 *.*
+recursive-include caffe2 *.*
+recursive-include cmake *.*
+recursive-include torch *.*
+recursive-include tools *.*
+recursive-include test *.*
+recursive-include docs *.*
+recursive-include ios *.*
+recursive-include third_party *
+recursive-include test *.*
+recursive-include benchmarks *.*
+recursive-include scripts *.*
+recursive-include mypy_plugins *.*
+recursive-include modules *.*
+recursive-include functorch *.*
 prune */__pycache__
-global-exclude *.o *.obj *.so *.a *.dylib *.pxd *.dll *.lib *.py[cod]
-
-prune */.git
-global-exclude .git *~ *.swp
+global-exclude *.o *.so *.dylib *.a .git *.pyc *.swp