[updater] make updater windows release builder builderless.

Bug: 1150148
Change-Id: I7d46d119da527fd68f3c185cfade91d334c0ff3a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2545579Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Anjali Doneria <adoneria@google.com>
Cr-Commit-Position: refs/heads/master@{#828496}

infra/config/generated/cr-buildbucket.cfg

@@ -20893,11 +20893,12 @@ buckets {
       name: "win-updater-builder-rel"
       swarming_host: "chromium-swarm.appspot.com"
       swarming_tags: "vpython:native-python-wrapper"
-      dimensions: "builder:win-updater-builder-rel"
+      dimensions: "builderless:1"
       dimensions: "cores:8"
       dimensions: "cpu:x86"
       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

@@ -2737,6 +2737,7 @@ ci.updater_builder(
     ),
     os = os.WINDOWS_DEFAULT,
     cpu = cpu.X86,
+    builderless = True,
 )
 
 ci.updater_builder(