compel: remove unneeded argc check

Checks for a number of arguments are to be done after option parsing.

With this patch, compel -V now works.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

compel/src/main.c

@@ -137,9 +137,6 @@ int main(int argc, char *argv[])
 		{ },
 	};
 
-	if (argc < 3)
-		goto usage;
-
 	while (1) {
 		idx = -1;
 		opt = getopt_long(argc, argv, short_opts, long_opts, &idx);