sdksyms.sh: don't embed the build path

This script generates a header that has a comment containing the build path for
no real reason.  As this source can end up deployed on targets in debug packages
this means there is both potentially sensitive information leakage about the
build environment, and a source of change for reproducible builds.

Upstream-Status: Submitted [https://gitlab.freedesktop.org/xorg/xserver/merge_requests/253]
Signed-off-by: Ross Burton <ross.burton@intel.com>

diff --git a/hw/xfree86/sdksyms.sh b/hw/xfree86/sdksyms.sh
index 39e33711d..cdb3794b9 100755
--- a/hw/xfree86/sdksyms.sh
+++ b/hw/xfree86/sdksyms.sh
@@ -308,7 +308,6 @@ BEGIN {
     print(" * These symbols are referenced to ensure they");
     print(" * will be available in the X Server binary.");
     print(" */");
-    printf("/* topdir=%s */\n", topdir);
     print("_X_HIDDEN void *xorg_symbols[] = {");
 
     printf("sdksyms.c:") > "sdksyms.dep";