Revert "Allow build script to produce packages on non-windows OSes"

This reverts commit 45ab2b2409.

build.sh

@@ -206,10 +206,7 @@ PackageWindows()
     local folder=$artifactsFolder/$runtime/$framework/Lidarr
     
     PackageFiles "$folder" "$framework" "$runtime"
-
-    if [ "$os" = "windows" ]; then
-        cp -r $outputFolder/$framework-windows/$runtime/publish/* $folder
-    fi
+    cp -r $outputFolder/$framework-windows/$runtime/publish/* $folder
 
     echo "Removing Lidarr.Mono"
     rm -f $folder/Lidarr.Mono.*