km/common: remove unused code

The 82xx board mgcoge3ne was removed from the codebase, so this is dead
code.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Cc: Heiko Schocher <hs@denx.de>
Reviewed-by: Heiko Schocher <hs@denx.de>

board/keymile/common/common.c

@@ -354,9 +354,6 @@ static int do_checktestboot(cmd_tbl_t *cmdtp, int flag, int argc,
 
 #if defined(CONFIG_POST)
 	testpin = post_hotkeys_pressed();
-#endif
-#if defined(CONFIG_MGCOGE3NE)
-	testpin = get_testpin();
 #endif
 	s = getenv("test_bank");
 	/* when test_bank is not set, act as if testpin is not asserted */