Revert "Fix incorrect relocations for x86."

Bug: 16853291
This reverts commit 512bc5232689bec9c763c8247b59de970096ff87.
diff --git a/libc/arch-x86/syscalls/setns.S b/libc/arch-x86/syscalls/setns.S
index 03e4206..ddbe758 100644
--- a/libc/arch-x86/syscalls/setns.S
+++ b/libc/arch-x86/syscalls/setns.S
@@ -17,7 +17,7 @@
     jb      1f
     negl    %eax
     pushl   %eax
-    call    PIC_PLT(__set_errno)
+    call    __set_errno
     addl    $4, %esp
 1:
     popl    %ecx