Revert "Fix incorrect relocations for x86."

Bug: 16853291
This reverts commit 512bc5232689bec9c763c8247b59de970096ff87.
diff --git a/libc/arch-x86/syscalls/fdatasync.S b/libc/arch-x86/syscalls/fdatasync.S
index 12bc328..fdb5578 100644
--- a/libc/arch-x86/syscalls/fdatasync.S
+++ b/libc/arch-x86/syscalls/fdatasync.S
@@ -13,7 +13,7 @@
     jb      1f
     negl    %eax
     pushl   %eax
-    call    PIC_PLT(__set_errno)
+    call    __set_errno
     addl    $4, %esp
 1:
     popl    %ebx