Blackfin arch: Remove cruft - CONFIG_DEBUG_SERIAL_EARLY_INIT and DEBUG_KERNEL_START

Remove cruft - CONFIG_DEBUG_SERIAL_EARLY_INIT didn't work that well, and
DEBUG_KERNEL_START was just implmented poorly. Will replace with a new
checkin.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

arch/blackfin/Kconfig

@@ -1039,24 +1039,6 @@ config DEBUG_ICACHE_CHECK
 	  also relocates the irq_panic() function to L1 memory, (which is
 	  un-cached).
 
-config DEBUG_KERNEL_START
-	bool "Debug Kernel Startup"
-	depends on DEBUG_KERNEL
-	help
-	  Say Y here to put in an mini-execption handler before the kernel
-	  replaces the bootloader exception handler. This will stop kernels
-	  from dieing at startup with no visible error messages.
-
-config DEBUG_SERIAL_EARLY_INIT
-	bool "Initialize serial driver early"
-	default n
-	depends on SERIAL_BFIN
-	help
-	  Say Y here if you want to get kernel output early when kernel
-	  crashes before the normal console initialization. If this option
-	  is enable, console output will always go to the ttyBF0, no matter
-	  what kernel boot paramters you set.
-
 config DEBUG_HUNT_FOR_ZERO
 	bool "Catch NULL pointer reads/writes"
 	default y