[CQ] Remove deleted builder from experimental set.

chromeos_daisy_chromium_compile_only_ng has been
deleted and was removed from Buildbucket in
https://chromium-review.googlesource.com/c/chromium/src/+/1195731

BUG=v8:8058

Change-Id: I42adaca73f0b04cf553e16f215f92ed2f5a7a010
Reviewed-on: https://chromium-review.googlesource.com/1198242Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55538}

infra/config/cq.cfg

@@ -120,10 +120,6 @@ verifiers {
         name: "cast_shell_linux"
         experiment_percentage: 20
       }
-      builders {
-        name: "chromeos_daisy_chromium_compile_only_ng"
-        experiment_percentage: 20
-      }
       builders {
         name: "linux-chromeos-rel"
         experiment_percentage: 20