Bug 1738279 [wpt PR 31417] - Remove superfluous cookie WPT, a=testonly

Automatic update from web-platform-tests
Remove superfluous cookie WPT

There's a test that's not really testing anything interesting in
external/wpt/cookies/attributes/resources/domain-child.sub.html.
So remove the test.

Bug: 1259937
Change-Id: I673c53c654478ed61b1e5dfdf53c51f85ca5b09e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3251400
Reviewed-by: Mike Taylor <miketaylr@chromium.org>
Commit-Queue: Mike Taylor <miketaylr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#935998}

--

wpt-commits: a965969e49618ae37b488333d389b0edc86983f6
wpt-pr: 31417

testing/web-platform/tests/cookies/attributes/resources/domain-child.sub.html

@@ -339,14 +339,8 @@
           location: `http://${wwwHost}:${port}/cookies/attributes/resources/path.html`,
         },
         {
-          cookie: `test=46b; domain=.`,
-          expected: "",
-          name: "No cookie returned with single dot ('.') domain value (aka host-cookie) on non-host subdomain redirect",
-          location: `http://${www2wwwHost}:${port}/cookies/attributes/resources/path.html`,
-        },
-        {
-          cookie: `test=46c; domain=.; domain=${host}`,
-          expected: "test=46c",
+          cookie: `test=46b; domain=.; domain=${host}`,
+          expected: "test=46b",
           name: "Return cookie with valid domain after domain with single dot ('.') value.",
           location: `http://${wwwHost}:${port}/cookies/attributes/resources/path.html`,
         },