simplified install_dependencies.bat

install_dependencies.bat

@@ -1,8 +1,5 @@
 @echo off
 
-if %1'==/?' goto :help
-
-:main
 if not exist windows_dependencies mkdir windows_dependencies
 if exist windows_dependencies/odb exit /b
 cd windows_dependencies
@@ -14,18 +11,10 @@ powershell -command "(new-object System.Net.WebClient).DownloadFile('https://www
 powershell -command "(new-object System.Net.WebClient).DownloadFile('https://www.sqlite.org/2018/sqlite-amalgamation-3240000.zip','sqlite-amalgamation.zip')"
 
 :: Unzip zip files
-ver | findstr /i "10\.0\." > nul && (set use=expand_archive)
-if "%use%" == "expand_archive" (
-    powershell -command "Expand-Archive libodb-2.4.0.zip ."
-    powershell -command "Expand-Archive libodb-sqlite-2.4.0.zip ."
-    powershell -command "Expand-Archive sqlite-dll.zip ."
-    powershell -command "Expand-Archive sqlite-amalgamation.zip ."
-) ELSE (
-    unzip libodb-2.4.0.zip
-    unzip libodb-sqlite-2.4.0.zip
-    unzip sqlite-dll.zip
-    unzip sqlite-amalgamation.zip
-)
+powershell -command "Expand-Archive libodb-2.4.0.zip ."
+powershell -command "Expand-Archive libodb-sqlite-2.4.0.zip ."
+powershell -command "Expand-Archive sqlite-dll.zip ."
+powershell -command "Expand-Archive sqlite-amalgamation.zip ."
 
 :: Restructure directory
 move libodb-sqlite-2.4.0\etc\sqlite .\
@@ -47,17 +36,3 @@ rmdir /s /q sqlite-amalgamation-3240000
 
 dir
 cd ..
-
-goto :eof
-
-:help
-echo Usage:
-echo install_dependencies.bat                   run install scripts
-echo install_dependencies.bat /?                displays help
-echo.
-echo it downloads the given dependencies:
-echo  - odb common runtime library              libodb-2.4.0
-echo  - odb sqlite runtime library              libodb-sqlite-2.4.0
-echo.
-echo Requires unzip for windows version below 10
-