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/testprotocol/testprotocol.c

@@ -39,12 +39,11 @@ MODULE_INFO info =
     MODULE_API_PROTOCOL,
     MODULE_IN_DEVELOPMENT,
     GWPROTOCOL_VERSION,
-    "Test protocol"
+    "Test protocol",
+    "V1.1.0"
 };
 /*lint +e14 */
 
-static char *version_str = "V1.1.0";
-
 static int test_read(DCB* dcb){ return 1;}
 static int test_write(DCB *dcb, GWBUF* buf){ return 1;}
 static int test_write_ready(DCB *dcb){ return 1;}
@@ -78,21 +77,6 @@ static GWPROTOCOL MyObject =
     test_connection_limit   /**< Connection limit        */
 };
 
-
-/**
- * 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.