MBO: Remove unused assignment

The local found variable is not used in this case. Commit
653d227e9f40cad1114c1c96654061446fd8b131 ('MBO: Improve supported
operating class generation') introduced this variable and unnecessarily
set it here. Remove the write-only assignment to silence static
analyzers.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

wpa_supplicant/mbo.c

@@ -576,7 +576,6 @@ static int wpas_op_class_supported(struct wpa_supplicant *wpa_s,
 	if (op_class->op_class == 128) {
 		u8 channels[] = { 42, 58, 106, 122, 138, 155 };
 
-		found = 0;
 		for (i = 0; i < ARRAY_SIZE(channels); i++) {
 			if (verify_channel(mode, channels[i], op_class->bw) ==
 			    ALLOWED)