Remove xpath-nodetab security patch

Based on comments from the libxml maintainer and a WebKit maintainer,
this patch is no longer needed after the following patch was made:
https://chromium.googlesource.com/chromium/src.git/+/99ead7d1564d35a70799b7ee4c3821053fb3985c
An equivalent patch was also made in WebKit:
https://github.com/WebKit/WebKit/commit/c8222bf810a77760c11df7b83d024fa395e5d4f5

Bug: 705445
Change-Id: I9310d44b7bec7db0356cc5dea648490da002226f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5152823
Commit-Queue: Joey Arhar <jarhar@chromium.org>
Reviewed-by: David Baron <dbaron@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1242521}
NOKEYCHECK=True
GitOrigin-RevId: b7ada534c12749809ee5429e092a5bb60c0202ef
4 files changed