Remove ExecuteFile function in Lua.

Source/Extras/LuaScript/pkgs/LuaScript/LuaScript.pkg

@@ -1,8 +1,5 @@
 $#include "LuaScript.h"
 
-void ExecuteFile(const String& fileName);
-void ExecuteFile(const char* fileName);
-
 Object* GetEventSender();
 
 void SendEvent(const String& eventName, VariantMap& eventData);
@@ -21,11 +18,6 @@ static LuaScript* GetLuaScript()
     return GetContext()->GetSubsystem<LuaScript>();
 }
 
-static bool ExecuteFile(const String& fileName)
-{
-    return GetLuaScript()->ExecuteFile(fileName);
-}
-
 static void SendEvent(const String& eventName, VariantMap& eventData)
 {
     GetLuaScript()->ScriptSendEvent(eventName, eventData);
@@ -33,7 +25,7 @@ static void SendEvent(const String& eventName, VariantMap& eventData)
 
 static Object* GetEventSender()
 {
-    return GetLuaScript()->GetEventSender();
+    return GetContext()->GetEventSender();
 }
 
 static void SubscribeToEvent(const String& eventName, const char* functionName)