Fix build and delete superfluous files

- Make Python make formatting pristine
- Add missing `#pragma weak` to Python source
- Fix Clang script flake due to missing directory

third_party/python/Tools/buildbot/build.bat

@@ -1,17 +0,0 @@
-@rem Used by the buildbot "compile" step.
-
-@rem Clean up
-call "%~dp0clean.bat" %*
-
-@rem If you need the buildbots to start fresh (such as when upgrading to
-@rem a new version of an external library, especially Tcl/Tk):
-@rem 1) uncomment the following line:
-
-@rem    call "%~dp0..\..\PCbuild\get_externals.bat" --clean-only
-
-@rem 2) commit and push
-@rem 3) wait for all Windows bots to start a build with that changeset
-@rem 4) re-comment, commit and push again
-
-@rem Do the build
-call "%~dp0..\..\PCbuild\build.bat" -e -d -k -v %*

third_party/python/Tools/buildbot/buildmsi.bat

@@ -1,9 +0,0 @@
-@rem Used by the buildbot "buildmsi" step.
-setlocal
-
-pushd
-
-@rem build both snapshot MSIs
-call "%~dp0..\msi\build.bat" -x86 -x64
-
-popd

third_party/python/Tools/buildbot/clean.bat

@@ -1,17 +0,0 @@
-@echo off
-rem Used by the buildbot "clean" step.
-
-setlocal
-set root=%~dp0..\..
-set pcbuild=%root%\PCbuild
-
-echo Deleting build
-call "%pcbuild%\build.bat" -t Clean -k %*
-call "%pcbuild%\build.bat" -t Clean -k -d %*
-
-echo Deleting .pyc/.pyo files ...
-del /s "%root%\Lib\*.pyc" "%root%\Lib\*.pyo"
-
-echo Deleting test leftovers ...
-rmdir /s /q "%root%\build"
-del /s "%pcbuild%\python*.zip"

third_party/python/Tools/buildbot/test.bat

@@ -1,19 +0,0 @@
-@echo off
-rem Used by the buildbot "test" step.
-setlocal
-
-set here=%~dp0
-set rt_opts=-q -d
-set regrtest_args=-j1
-
-:CheckOpts
-if "%1"=="-x64" (set rt_opts=%rt_opts% %1) & shift & goto CheckOpts
-if "%1"=="-d" (set rt_opts=%rt_opts% %1) & shift & goto CheckOpts
-if "%1"=="-O" (set rt_opts=%rt_opts% %1) & shift & goto CheckOpts
-if "%1"=="-q" (set rt_opts=%rt_opts% %1) & shift & goto CheckOpts
-if "%1"=="+d" (set rt_opts=%rt_opts:-d=%) & shift & goto CheckOpts
-if "%1"=="+q" (set rt_opts=%rt_opts:-q=%) & shift & goto CheckOpts
-if NOT "%1"=="" (set regrtest_args=%regrtest_args% %1) & shift & goto CheckOpts
-
-echo on
-call "%here%..\..\PCbuild\rt.bat" %rt_opts% -uall -rwW --slowest --timeout=1200 %regrtest_args%