kdb: Remove cpu from the more prompt

Having the CPU in the more prompt is completely redundent vs the
standard kdb prompt, and it also wastes 32 bytes on the stack.
Signed-off-by: NJason Wessel <jason.wessel@windriver.com>

kernel/debug/kdb/kdb_io.c

@@ -715,9 +715,6 @@ int vkdb_printf(const char *fmt, va_list ap)
 	/* check for having reached the LINES number of printed lines */
 	if (kdb_nextline == linecount) {
 		char buf1[16] = "";
-#if defined(CONFIG_SMP)
-		char buf2[32];
-#endif
 
 		/* Watch out for recursion here.  Any routine that calls
 		 * kdb_printf will come back through here.  And kdb_read
@@ -732,14 +729,6 @@ int vkdb_printf(const char *fmt, va_list ap)
 		if (moreprompt == NULL)
 			moreprompt = "more> ";
 
-#if defined(CONFIG_SMP)
-		if (strchr(moreprompt, '%')) {
-			sprintf(buf2, moreprompt, get_cpu());
-			put_cpu();
-			moreprompt = buf2;
-		}
-#endif
-
 		kdb_input_flush();
 		c = console_drivers;