Revert "Enable gold linker for aarch64."

Causes build failures on Darwin.

prebuilts/gcc/darwin-x86/aarch64/aarch64-linux-android-4.9/aarch64-linux-android/bin/ld.gold: warning: cannot scan executable section 5 of out/target/product/flounder/obj/SHARED_LIBRARIES/libdl_intermediates/libdl.o for Cortex-A53 erratum because it has no mapping symbols.

prebuilts/gcc/darwin-x86/aarch64/aarch64-linux-android-4.9/aarch64-linux-android/bin/ld.gold: warning: cannot scan executable section 8 of out/target/product/flounder/obj/SHARED_LIBRARIES/libdl_intermediates/libdl.o for Cortex-A53 erratum because it has no mapping symbols.

prebuilts/gcc/darwin-x86/aarch64/aarch64-linux-android-4.9/aarch64-linux-android/bin/ld.gold: warning: cannot scan executable section 11 of out/target/product/flounder/obj/SHARED_LIBRARIES/libdl_intermediates/libdl.o for Cortex-A53 erratum because it has no mapping symbols.

prebuilts/gcc/darwin-x86/aarch64/aarch64-linux-android-4.9/aarch64-linux-android/bin/ld.gold: error: treating warnings as errors

This reverts commit 127d110172818c7dce14fefcc72b07a18686ee9c.

Change-Id: I1d3de90f5ae777b66a8f94fbcc9ccde8a9e3001c
diff --git a/core/combo/TARGET_linux-arm64.mk b/core/combo/TARGET_linux-arm64.mk
index ce7f62e..b213ea7 100644
--- a/core/combo/TARGET_linux-arm64.mk
+++ b/core/combo/TARGET_linux-arm64.mk
@@ -110,8 +110,6 @@
 			-Wl,-maarch64linux \
 			-Wl,--hash-style=gnu \
 			-Wl,--fix-cortex-a53-843419 \
-			-fuse-ld=gold \
-			-Wl,--icf=safe \
 			$(arch_variant_ldflags)
 
 # Disable transitive dependency library symbol resolving.