Revert "build,windows: implement PEP514 python detection"

vcbuild.bat

@@ -254,7 +254,8 @@ goto run
 if defined noprojgen goto msbuild
 
 @rem Generate the VS project.
-call :run-python configure %configure_flags% --dest-cpu=%target_arch% --tag=%TAG% %link_module%
+echo configure %configure_flags% --dest-cpu=%target_arch% --tag=%TAG% %link_module%
+python configure %configure_flags% --dest-cpu=%target_arch% --tag=%TAG% %link_module%
 if errorlevel 1 goto create-msvs-files-failed
 if not exist node.sln goto create-msvs-files-failed
 echo Project files generated.
@@ -443,7 +444,7 @@ if defined test_node_inspect goto node-test-inspect
 goto node-tests
 
 :node-check-deopts
-call :run-python tools\test.py --mode=release --check-deopts parallel sequential -J
+python tools\test.py --mode=release --check-deopts parallel sequential -J
 if defined test_node_inspect goto node-test-inspect
 goto node-tests
 
@@ -465,7 +466,8 @@ if "%config%"=="Debug" set test_args=--mode=debug %test_args%
 if "%config%"=="Release" set test_args=--mode=release %test_args%
 echo running 'cctest %cctest_args%'
 "%config%\cctest" %cctest_args%
-call :run-python tools\test.py %test_args%
+echo running 'python tools\test.py %test_args%'
+python tools\test.py %test_args%
 goto test-v8
 
 :test-v8
@@ -477,7 +479,7 @@ goto lint-cpp
 :lint-cpp
 if not defined lint_cpp goto lint-js
 call :run-lint-cpp src\*.c src\*.cc src\*.h test\addons\*.cc test\addons\*.h test\addons-napi\*.cc test\addons-napi\*.h test\cctest\*.cc test\cctest\*.h test\gc\binding.cc tools\icu\*.cc tools\icu\*.h
-call :run-python tools/check-imports.py
+python tools/check-imports.py
 goto lint-js
 
 :run-lint-cpp
@@ -493,7 +495,7 @@ for /f "tokens=*" %%G in ('dir /b /s /a %*') do (
 ( endlocal
   set cppfilelist=%localcppfilelist%
 )
-call :run-python tools/cpplint.py %cppfilelist% > nul
+python tools/cpplint.py %cppfilelist% > nul
 goto exit
 
 :add-to-list
@@ -553,14 +555,6 @@ echo   vcbuild.bat link-module my_module.js : bundles my_module as built-in modu
 echo   vcbuild.bat lint                     : runs the C++ and JavaScript linter
 goto exit
 
-:run-python
-call tools\msvs\find_python.cmd
-if errorlevel 1 echo Could not find python2 & goto :exit
-set cmd1="%VCBUILD_PYTHON_LOCATION%" %*
-echo %cmd1%
-%cmd1%
-exit /b %ERRORLEVEL%
-
 :exit
 goto :EOF
 
@@ -573,9 +567,8 @@ rem ***************
 set NODE_VERSION=
 set TAG=
 set FULLVERSION=
-:: Call as subroutine for validation of python
-call :run-python tools\getnodeversion.py > nul
-for /F "tokens=*" %%i in ('"%VCBUILD_PYTHON_LOCATION%" tools\getnodeversion.py') do set NODE_VERSION=%%i
+
+for /F "usebackq tokens=*" %%i in (`python "%~dp0tools\getnodeversion.py"`) do set NODE_VERSION=%%i
 if not defined NODE_VERSION (
   echo Cannot determine current version of Node.js
   exit /b 1