Remove triggered_by from win10-wpt-chromium-rel builder config

This should not be there, and no build is scheduled after the change.

Bug: 40927590
Change-Id: I5e869a171ca6824ae3ddc9d2ac79e4fcb389a90c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5531407
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Weizhong Xia <weizhong@google.com>
Cr-Commit-Position: refs/heads/main@{#1299500}

infra/config/generated/luci/luci-scheduler.cfg

@@ -6196,6 +6196,15 @@ job {
     builder: "win10-updater-tester-rel-uac"
   }
 }
+job {
+  id: "win10-wpt-chromium-rel"
+  realm: "ci"
+  buildbucket {
+    server: "cr-buildbucket.appspot.com"
+    bucket: "ci"
+    builder: "win10-wpt-chromium-rel"
+  }
+}
 job {
   id: "win11-arm64-dbg-tests"
   realm: "ci"
@@ -6663,6 +6672,7 @@ trigger {
   triggers: "win-updater-builder-dbg"
   triggers: "win-updater-builder-rel"
   triggers: "win10-rel-no-external-ip"
+  triggers: "win10-wpt-chromium-rel"
   triggers: "win32-archive-rel"
   triggers: "win32-arm64-rel"
   triggers: "win32-official"

infra/config/subprojects/chromium/ci/chromium.fyi.star

@@ -2180,7 +2180,6 @@ ci.builder(
 Runs <a href="https://web-platform-tests.org">web platform tests</a> against
 Chrome.\
 """,
-    triggered_by = [],
     builder_spec = builder_config.builder_spec(
         gclient_config = builder_config.gclient_config(
             config = "chromium",