Combine ModuleInit and GetModuleObject

The two functions can be combined into one as both are called only
once. This removes the need for the explicit ModuleInit function.

server/modules/protocol/MySQL/MySQLBackend/mysql_backend.c

@@ -112,14 +112,6 @@ static GWPROTOCOL MyObject =
     NULL                        /* Connection limit reached      */
 };
 
-/*
- * The module initialisation routine, called when the module
- * is first loaded.
- */
-void ModuleInit()
-{
-}
-
 /*
  * The module entry point routine. It is this routine that
  * must populate the structure that is referred to as the