um: kill dead code around uaccess

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index c4491c1..bc49474 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -11,7 +11,7 @@
 
 obj-y = config.o exec.o exitcode.o init_task.o irq.o ksyms.o mem.o \
 	physmem.o process.o ptrace.o reboot.o sigio.o \
-	signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o uaccess.o \
+	signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o \
 	um_arch.o umid.o skas/
 
 obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o