Remove vfork.c from Makefile as well

libc/sysdeps/linux/vax/Makefile.arch

@@ -6,7 +6,7 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-CSRC:=brk.c _mmap.c vfork.c
+CSRC:=brk.c _mmap.c
 SSRC:=__longjmp.S setjmp.S _setjmp.S clone.S
 
 ARCH_DIR:=$(top_srcdir)libc/sysdeps/linux/vax