Revert "ANDROID: HACK: arm64, LLVMLinux: use -mno-implicit-float"

This reverts commit 1416d1c439.

Unnecessary with Clang 6.0+.

Signed-off-by: Danny Lin <danny@kdrag0n.dev>
Change-Id: I6f29ca050566e9027e51605e64bf6893602344ef

arch/arm64/Makefile

@@ -58,14 +58,7 @@ $(warning Detected assembler with broken .inst; disassembly will be unreliable)
   endif
 endif
 
-ifeq ($(cc-name),clang)
-# This is a workaround for https://bugs.llvm.org/show_bug.cgi?id=30792.
-# TODO: revert when this is fixed in LLVM.
-KBUILD_CFLAGS	+= -mno-implicit-float
-else
-KBUILD_CFLAGS	+= -mgeneral-regs-only
-endif
-KBUILD_CFLAGS	+= $(lseinstr) $(brokengasinst)
+KBUILD_CFLAGS	+= -mgeneral-regs-only $(lseinstr) $(brokengasinst)
 KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables
 KBUILD_CFLAGS	+= $(call cc-option, -mpc-relative-literal-loads)
 KBUILD_CFLAGS	+= -fno-pic