Update the CI builder win10-inverse-fieldtrials-fyi-rel to builderless

Bug: 1099916
Change-Id: I1fc5b170dc879a191e96eea03366366a55234655
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2505832
Auto-Submit: Haiyang Pan <hypan@google.com>
Reviewed-by: Stephen Martinis <martiniss@chromium.org>
Commit-Queue: Stephen Martinis <martiniss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821781}

infra/config/generated/cr-buildbucket.cfg

@@ -17344,11 +17344,12 @@ buckets {
       name: "win10-inverse-fieldtrials-fyi-rel"
       swarming_host: "chromium-swarm.appspot.com"
       swarming_tags: "vpython:native-python-wrapper"
-      dimensions: "builder:win10-inverse-fieldtrials-fyi-rel"
+      dimensions: "builderless:1"
       dimensions: "cores:8"
       dimensions: "cpu:x86-64"
       dimensions: "os:Windows-10"
       dimensions: "pool:luci.chromium.ci"
+      dimensions: "ssd:0"
       exe {
         cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
         cipd_version: "refs/heads/master"

infra/config/subprojects/chromium/ci.star

@@ -3142,6 +3142,7 @@ ci.fyi_windows_builder(
 
 ci.fyi_windows_builder(
     name = "win10-inverse-fieldtrials-fyi-rel",
+    builderless = True,
     console_view_entry = ci.console_view_entry(
         category = "win10",
         short_name = "IFT",