Remove some lifetime references from the accept-ch-stickiness tests

Bug: 1017166
Change-Id: I00d38c7d4ea61ce9d1d7146459a7ecbe91a93075
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2002668Reviewed-by: Yoav Weiss <yoavweiss@chromium.org>
Commit-Queue: Aaron Tagliaboschi <aarontag@chromium.org>
Cr-Commit-Position: refs/heads/master@{#731962}

third_party/blink/web_tests/external/wpt/client-hints/accept-ch-stickiness/resources/accept-ch-test.js

@@ -22,7 +22,7 @@ const run_test = test => {
   }, test.name + " precondition: Test that the browser does not have client " +
     "hints preferences cached");
 
-  // Then, attempt to set Accept-CH-Lifetime for 1 second
+  // Then, attempt to set Accept-CH
   promise_test(t => {
     return new Promise(resolve => {
       if (test.type == "navigation") {

third_party/blink/web_tests/external/wpt/client-hints/accept-ch-stickiness/resources/accept-ch.html.headers

 Accept-CH: device-memory, DPR
-Accept-CH-Lifetime: 1
 Access-Control-Allow-Origin: *