x86, early_serial_console: Remove unnecessary check

We do this check already a couple of lines up.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Link: http://lkml.kernel.org/r/1420009958-4803-1-git-send-email-kuleshovmail@gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
diff --git a/arch/x86/boot/early_serial_console.c b/arch/x86/boot/early_serial_console.c
index 790586d..45a07684 100644
--- a/arch/x86/boot/early_serial_console.c
+++ b/arch/x86/boot/early_serial_console.c
@@ -72,8 +72,8 @@
 			static const int bases[] = { 0x3f8, 0x2f8 };
 			int idx = 0;
 
-			if (!strncmp(arg + pos, "ttyS", 4))
-				pos += 4;
+			/* += strlen("ttyS"); */
+			pos += 4;
 
 			if (arg[pos++] == '1')
 				idx = 1;