(partially) Fix Bug#55227 Fix compiler warnings in innodb with gcc 4.6

Fix compiler warning:
eval/eval0eval.c: In function 'eval_notfound':
eval/eval0eval.c:388:14: error: variable 'arg2' set but not used [-Werror=unused-but-set-variable]

storage/innodb_plugin/eval/eval0eval.c

@@ -385,13 +385,11 @@ eval_notfound(
 	func_node_t*	func_node)	/*!< in: function node */
 {
 	que_node_t*	arg1;
-	que_node_t*	arg2;
 	sym_node_t*	cursor;
 	sel_node_t*	sel_node;
 	ibool		ibool_val;
 
 	arg1 = func_node->args;
-	arg2 = que_node_get_next(arg1);
 
 	ut_ad(func_node->func == PARS_NOTFOUND_TOKEN);