printk: remove obsolete check for log level "c"

The kernel log level "c" was removed in commit 61e99ab8e35a ("printk:
remove the now unnecessary "C" annotation for KERN_CONT").  It is no
longer detected in printk_get_level().  Hence we do not need to check it
in vprintk_emit.

Signed-off-by: Petr Mladek <pmladek@suse.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Kay Sievers <kay@vrfy.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 4dae9cb..db7a02e 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1560,8 +1560,6 @@
 					level = kern_level - '0';
 			case 'd':	/* KERN_DEFAULT */
 				lflags |= LOG_PREFIX;
-			case 'c':	/* KERN_CONT */
-				break;
 			}
 			text_len -= end_of_header - text;
 			text = (char *)end_of_header;