x86/syscalls: Remove -Wno-override-init for syscall tables

Commit 44fe489 ("Stop filling syscall arrays with *_sys_ni_syscall")
removes the need for -Wno-override-init, since the table is now filled
sequentially instead of overriding a default value.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20210524181707.132844-3-brgerst@gmail.com

Author: Brian Gerst

arch/x86/entry/Makefile

@@ -17,10 +17,6 @@ CFLAGS_syscall_64.o		+= -fno-stack-protector
 CFLAGS_syscall_32.o		+= -fno-stack-protector
 CFLAGS_syscall_x32.o		+= -fno-stack-protector
 
-CFLAGS_syscall_64.o		+= $(call cc-option,-Wno-override-init,)
-CFLAGS_syscall_32.o		+= $(call cc-option,-Wno-override-init,)
-CFLAGS_syscall_x32.o		+= $(call cc-option,-Wno-override-init,)
-
 obj-y				:= entry_$(BITS).o thunk_$(BITS).o syscall_$(BITS).o
 obj-y				+= common.o