Remove unused 'x' parameter

'-x' option was removed a while ago, but 'x' was not removed
from getopt_long() parameter. Remove it.

Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>

src/evmctl.c

@@ -1704,7 +1704,7 @@ int main(int argc, char *argv[])
 	g_argc = argc;
 
 	while (1) {
-		c = getopt_long(argc, argv, "hvnsda:p:fu::xk:t:r", opts, &lind);
+		c = getopt_long(argc, argv, "hvnsda:p:fu::k:t:r", opts, &lind);
 		if (c == -1)
 			break;