x86, boot: Removed unused debug flag and set code

As we're no longer using the flag we don't need to extract the value from the
command line and store it. This is a step towards removing command line
parameter code.

Signed-off-by: Joe Millenbach <jmillenbach@gmail.com>
Link: http://lkml.kernel.org/r/1342746282-28497-6-git-send-email-jmillenbach@gmail.com
Signed-off-by: Gokul Caushik <caushik1@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/x86/boot/compressed/misc.c

@@ -108,7 +108,6 @@ static void error(char *m);
  * This is set up by the setup-routine at boot-time
  */
 struct boot_params *real_mode;		/* Pointer to real-mode data */
-static int debug;
 
 void *memset(void *s, int c, size_t n);
 void *memcpy(void *dest, const void *src, size_t n);
@@ -326,9 +325,6 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
 {
 	real_mode = rmode;
 
-	if (cmdline_find_option_bool("debug"))
-		debug = 1;
-
 	if (real_mode->screen_info.orig_video_mode == 7) {
 		vidmem = (char *) 0xb0000;
 		vidport = 0x3b4;