hikey: Totally remove FIQ console

This removes the conditional FIQ console
support on hikey.

NOTE: This should land right after prebuilt kernels
for 4.4 4.9 and 4.14 that contain matching versions of:
 https://android-review.googlesource.com/c/kernel/hikey-linaro/+/848797/

Change-Id: I78f12c05d4bc22a69f7c07a765357494c6d60529
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/hikey/BoardConfig.mk b/hikey/BoardConfig.mk
index 1eab567..360c777 100644
--- a/hikey/BoardConfig.mk
+++ b/hikey/BoardConfig.mk
@@ -6,12 +6,7 @@
 TARGET_CPU_VARIANT := cortex-a53
 TARGET_2ND_CPU_VARIANT := cortex-a53
 
-ifeq ($(TARGET_KERNEL_USE), 4.19)
 BOARD_KERNEL_CMDLINE := console=ttyAMA3,115200 androidboot.console=ttyAMA3 androidboot.hardware=hikey firmware_class.path=/vendor/firmware efi=noruntime
-else
-# FIQ debugger is deprecated and we'll remoeve this once kernel support in prebuilts are yanked
-BOARD_KERNEL_CMDLINE := console=ttyFIQ0 androidboot.console=ttyFIQ0 androidboot.hardware=hikey firmware_class.path=/vendor/firmware efi=noruntime
-endif
 
 # Enable dtb fstab for treble, with verity and system-as-root
 # NOTE: Disabled by default until b/111829702 is fixed