Remove Windows build_all bat file

scripts_windows/build_all.bat

@@ -1,44 +0,0 @@
-@ECHO OFF
-SETLOCAL EnableDelayedExpansion
-SET EL=0
-
-REM CALL "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
-REM IF ERRORLEVEL 1 SET EL=1
-
-:: Build the library files for individual implementations
-FOR /D %%K IN (crypto_kem\* crypto_sign\*) DO (
-  FOR /D %%L IN (%%K\*) DO (
-    CD %%L
-    nmake /f Makefile.Microsoft_nmake clean
-    IF ERRORLEVEL 1 SET EL=2
-    nmake /f Makefile.Microsoft_nmake
-    IF ERRORLEVEL 1 SET EL=3
-    CD ..\..\..
-  )
-)
-
-:: Build and run the functional tests and test vector programs for each implementation
-FOR %%T IN (kem sign) DO (
-  CD crypto_%%T
-  FOR /D %%K IN (*) DO (
-    SET schemeuppercase=%%K
-    FOR %%B IN (A B C D E F G H I J K L M N O P Q R S T U V W X Y Z) DO SET "schemeuppercase=!schemeuppercase:%%B=%%B!"
-    SET "schemeuppercase=!schemeuppercase:-=!"
-    CD %%K
-    FOR /D %%L IN (*) DO (
-      CD ..\..\test
-      nmake /NOLOGO /f Makefile.Microsoft_nmake /E TYPE=%%T SCHEME=%%K SCHEME_UPPERCASE=!schemeuppercase! IMPLEMENTATION=%%L clean
-      IF ERRORLEVEL 1 SET EL=4
-      nmake /NOLOGO /f Makefile.Microsoft_nmake /E TYPE=%%T SCHEME=%%K SCHEME_UPPERCASE=!schemeuppercase! IMPLEMENTATION=%%L
-      IF ERRORLEVEL 1 SET EL=5
-      CD ..
-      bin\functest_%%K_%%L
-      IF ERRORLEVEL 1 SET EL=6
-      CD crypto_%%T\%%K
-    )
-    CD ..
-  )
-  CD ..
-)
-
-EXIT /b %EL%