Revert "kernel: allow devices to use newer GCC"

This reverts commit 4e345c1cba5433e2dd63fcf462188bee224893b3.

Change-Id: Ieb7605faffce427e5e3a410b8b37335f4184c4d0
Signed-off-by: Jackeagle <jackeagle102@gmail.com>
diff --git a/config/BoardConfigKernel.mk b/config/BoardConfigKernel.mk
index 36333bb..f9b7876 100644
--- a/config/BoardConfigKernel.mk
+++ b/config/BoardConfigKernel.mk
@@ -1,4 +1,4 @@
-# Copyright (C) 2018-2020 The LineageOS Project
+# Copyright (C) 2018-2022 The LineageOS Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -28,7 +28,6 @@
 #                                                      x86_64-linux-android- for x86
 #
 #   TARGET_KERNEL_CLANG_COMPILE        = Compile kernel with clang, defaults to true
-#   TARGET_KERNEL_NEW_GCC_COMPILE      = Compile kernel with newer version GCC, defaults to false
 #
 #   KERNEL_TOOLCHAIN_PREFIX            = Overrides TARGET_KERNEL_CROSS_COMPILE_PREFIX,
 #                                          Set this var in shell to override
@@ -52,27 +51,15 @@
 
 CLANG_PREBUILTS := $(BUILD_TOP)/prebuilts/clang/host/$(HOST_PREBUILT_TAG)/clang-r450784d
 GCC_PREBUILTS := $(BUILD_TOP)/prebuilts/gcc/$(HOST_PREBUILT_TAG)
-ifeq ($(TARGET_KERNEL_NEW_GCC_COMPILE),true)
-    ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true)
-        $(error TARGET_KERNEL_NEW_GCC_COMPILE cannot be used with TARGET_KERNEL_CLANG_COMPILE!)
-    endif
-    # arm64 toolchain
-    KERNEL_TOOLCHAIN_arm64 := $(GCC_PREBUILTS)/aarch64/aarch64-elf/bin
-    KERNEL_TOOLCHAIN_PREFIX_arm64 := aarch64-elf-
-    # arm toolchain
-    KERNEL_TOOLCHAIN_arm := $(GCC_PREBUILTS)/arm/arm-eabi/bin
-    KERNEL_TOOLCHAIN_PREFIX_arm := arm-eabi-
-else
-    # arm64 toolchain
-    KERNEL_TOOLCHAIN_arm64 := $(GCC_PREBUILTS)/aarch64/aarch64-linux-android-4.9/bin
-    KERNEL_TOOLCHAIN_PREFIX_arm64 := aarch64-linux-android-
-    # arm toolchain
-    KERNEL_TOOLCHAIN_arm := $(GCC_PREBUILTS)/arm/arm-linux-androideabi-4.9/bin
-    KERNEL_TOOLCHAIN_PREFIX_arm := arm-linux-androidkernel-
-    # x86 toolchain
-   KERNEL_TOOLCHAIN_x86 := $(GCC_PREBUILTS)/x86/x86_64-linux-android-4.9/bin
-   KERNEL_TOOLCHAIN_PREFIX_x86 := x86_64-linux-android-
-endif
+# arm64 toolchain
+KERNEL_TOOLCHAIN_arm64 := $(GCC_PREBUILTS)/aarch64/aarch64-linux-android-4.9/bin
+KERNEL_TOOLCHAIN_PREFIX_arm64 := aarch64-linux-android-
+# arm toolchain
+KERNEL_TOOLCHAIN_arm := $(GCC_PREBUILTS)/arm/arm-linux-androideabi-4.9/bin
+KERNEL_TOOLCHAIN_PREFIX_arm := arm-linux-androidkernel-
+# x86 toolchain
+KERNEL_TOOLCHAIN_x86 := $(GCC_PREBUILTS)/x86/x86_64-linux-android-4.9/bin
+KERNEL_TOOLCHAIN_PREFIX_x86 := x86_64-linux-android-
 TARGET_KERNEL_CROSS_COMPILE_PREFIX := $(strip $(TARGET_KERNEL_CROSS_COMPILE_PREFIX))
 ifneq ($(TARGET_KERNEL_CROSS_COMPILE_PREFIX),)
 KERNEL_TOOLCHAIN_PREFIX ?= $(TARGET_KERNEL_CROSS_COMPILE_PREFIX)