Move version entry point into MODULE_INFO

The MODULE_INFO can easily hold the version information of the
module. This removes the need for a explicit version entry point.

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

@@ -60,11 +60,11 @@ MODULE_INFO info =
     MODULE_API_PROTOCOL,
     MODULE_GA,
     GWPROTOCOL_VERSION,
-    "The MySQL to backend server protocol"
+    "The MySQL to backend server protocol",
+    "V2.0.0"
 };
 /*lint +e14 */
 
-static char *version_str = "V2.0.0";
 static int gw_create_backend_connection(DCB *backend, SERVER *server, SESSION *in_session);
 static int gw_read_backend_event(DCB* dcb);
 static int gw_write_backend_event(DCB *dcb);
@@ -112,20 +112,6 @@ static GWPROTOCOL MyObject =
     NULL                        /* Connection limit reached      */
 };
 
-/*
- * Implementation of the mandatory version entry point
- *
- * @return version string of the module
- *
- * @see function load_module in load_utils.c for explanation of the following
- * lint directives.
- */
-/*lint -e14 */
-char* version()
-{
-    return version_str;
-}
-
 /*
  * The module initialisation routine, called when the module
  * is first loaded.