dtc: Remove unused check variable

Commit 376ab6f removed the old style check functionality from DTC,
however the check option and variable were not removed.  This leads to
build failures when -Werror=unused-but-set-variable is specified:

	dtc.c: In function 'main':
	dtc.c:102:17: error: variable 'check' set but not used [-Werror=unused-but-set-variable]
	cc1: all warnings being treated as errors
	make: *** [dtc.o] Error 1
	make: *** Waiting for unfinished jobs....

Remove the check variable.

Signed-off-by: Josh Boyer <[email protected]>
Acked-by: David Gibson <[email protected]>

dtc.c

@@ -99,7 +99,7 @@ int main(int argc, char *argv[])
 	const char *inform = "dts";
 	const char *outform = "dts";
 	const char *outname = "-";
-	int force = 0, check = 0, sort = 0;
+	int force = 0, sort = 0;
 	const char *arg;
 	int opt;
 	FILE *outf = NULL;
@@ -111,7 +111,7 @@ int main(int argc, char *argv[])
 	minsize    = 0;
 	padsize    = 0;
 
-	while ((opt = getopt(argc, argv, "hI:O:o:V:R:S:p:fcqb:vH:s")) != EOF) {
+	while ((opt = getopt(argc, argv, "hI:O:o:V:R:S:p:fqb:vH:s")) != EOF) {
 		switch (opt) {
 		case 'I':
 			inform = optarg;
@@ -137,9 +137,6 @@ int main(int argc, char *argv[])
 		case 'f':
 			force = 1;
 			break;
-		case 'c':
-			check = 1;
-			break;
 		case 'q':
 			quiet++;
 			break;