stone-soup: remove options

Formula/stone-soup.rb

@@ -12,11 +12,10 @@ class StoneSoup < Formula
   end
 
   option "with-tiles", "Enable graphic tiles and sound"
-  option "without-lua@5.1", "Disable Lua bindings for user scripts"
 
   depends_on "pkg-config" => :build
+  depends_on "lua@5.1"
   depends_on "pcre"
-  depends_on "lua@5.1" => :recommended
 
   if build.with? "tiles"
     depends_on "sdl2"
@@ -40,6 +39,7 @@ class StoneSoup < Formula
         BUILD_SQLITE=yes
         BUILD_FREETYPE=
         BUILD_LIBPNG=
+        BUILD_LUA=y
         BUILD_SDL2=
         BUILD_SDL2MIXER=
         BUILD_SDL2IMAGE=
@@ -52,12 +52,6 @@ class StoneSoup < Formula
         args << "SOUND=y"
       end
 
-      if build.with? "lua@5.1"
-        args << "BUILD_LUA=y"
-      else
-        args << "NO_LUA_BINDINGS=y"
-      end
-
       # FSF GCC doesn't support the -rdynamic flag
       args << "NO_RDYNAMIC=y" unless ENV.compiler == :clang