build,win: remove unmatched `endlocal` statement

Seems like it's a leftover from c403eeb7fd

PR-URL: https://github.com/nodejs/node/pull/22627
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Bartosz Sosnowski <bartosz@janeasystems.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

vcbuild.bat

@@ -502,7 +502,6 @@ set npm_config_nodedir=%~dp0
 "%node_exe%" "%~dp0tools\build-addons.js" "%~dp0deps\npm\node_modules\node-gyp\bin\node-gyp.js" "%~dp0test\addons-napi"
 if errorlevel 1 exit /b 1
 endlocal
-endlocal
 goto run-tests
 
 :run-tests