Fix the launch process

packaging/osx/OpenRA.app/Contents/MacOS/OpenRA

@@ -5,9 +5,4 @@
 
 APP_PATH=`echo $0 | awk '{split($0,patharr,"/"); idx=1; while(patharr[idx+3] != "") { if (patharr[idx] != "/") {printf("%s/", patharr[idx]); idx++ }} }'`
 cd "$APP_PATH/Contents/Resources"
-
-if [ ! -e mods/ra/packages/redalert.mix ]; then
-osascript install_ra_mix.scpt
-else
-./OpenRA settings=../../../launcher.ini
-fi
+./OpenRA $@