Revert "Fix incorrect relocations for x86."

Bug: 16853291
This reverts commit 512bc5232689bec9c763c8247b59de970096ff87.
diff --git a/libc/arch-x86/bionic/vfork.S b/libc/arch-x86/bionic/vfork.S
index 91453f1..ffa6b16 100644
--- a/libc/arch-x86/bionic/vfork.S
+++ b/libc/arch-x86/bionic/vfork.S
@@ -38,7 +38,7 @@
   jb      1f
   negl    %eax
   pushl   %eax
-  call    PIC_PLT(__set_errno)
+  call    __set_errno
 1:
   jmp     *%ecx  // Jump to the stored return address.
 END(vfork)