Revert "trigger build lua only once"

This reverts commit 58bb9a8c.

premake5.lua

@@ -8,6 +8,9 @@ project "ocgcore"
         includedirs { "../lua" }
     end
 
+    filter "action:vs*"
+        includedirs { "../lua" }
+
     filter "not action:vs*"
         buildoptions { "-std=c++14" }