Remove linux-ozone-rel from M81 CQ

This builder was broken by recipe-side change crrev.com/c/2125157,
but the fix (crrev.com/c/2128842) was not cherry-picked to the M81
branch. Since this feature is not enabled in M81, we can simply
remove this builder from the CQ rather than cherry-picking the test
fix.

Bug: 1068383
TBR: gbeaty@chromium.org
No-Try: True
No-Tree-Checks: True
Change-Id: I2cc44a80dca5ca55cc5f94c96c3bbbec2397907e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2140295
Commit-Queue: Aaron Gable <agable@chromium.org>
Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>
Auto-Submit: Aaron Gable <agable@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757106}

infra/config/generated/commit-queue.cfg

@@ -1339,6 +1339,7 @@ config_groups: <
       >
       builders: <
         name: "chromium/try-m81/linux-ozone-rel"
+        includable_only: true
       >
       builders: <
         name: "chromium/try-m81/linux-rel"

infra/config/versioned/milestones/m81/buckets/try.star

@@ -163,7 +163,6 @@ try_.chromium_linux_builder(
 
 try_.chromium_linux_builder(
     name = 'linux-ozone-rel',
-    tryjob = try_.job(),
 )
 
 try_.chromium_linux_builder(