imraa.c: remove ARGP_KEY_ARG checking that makes no sense

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

imraa/imraa.c

@@ -112,10 +112,6 @@ parse_opt(int key, char *arg, struct argp_state *state)
             arguments->input_file = arg;
             break;
         case ARGP_KEY_ARG:
-            if (state->arg_num >= 2) {
-                argp_usage(state);
-            }
-            arguments->args[state->arg_num] = arg;
             break;
         case ARGP_KEY_END:
             break;