Remove linux-jumbo-rel from the CQ.

We are in the process of dropping support for the jumbo configuration;
removing it from the CQ is the first step.

Bug: 994387
Change-Id: Ia333d1b4bb6b1f869425f924123cd237193a6ed9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1834205Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701711}

docs/infra/cq_builders.md

@@ -48,8 +48,6 @@ These builders must pass before a CL may land.
 
 * [linux-chromeos-rel](https://ci.chromium.org/p/chromium/builders/luci.chromium.try/linux-chromeos-rel) ([`commit-queue.cfg` entry](https://cs.chromium.org/search/?q=package:%5Echromium$+file:commit-queue.cfg+chromium/try/linux-chromeos-rel)) ([matching builders](https://cs.chromium.org/search/?q=file:trybots.py+linux-chromeos-rel))
 
-* [linux-jumbo-rel](https://ci.chromium.org/p/chromium/builders/luci.chromium.try/linux-jumbo-rel) ([`commit-queue.cfg` entry](https://cs.chromium.org/search/?q=package:%5Echromium$+file:commit-queue.cfg+chromium/try/linux-jumbo-rel)) ([matching builders](https://cs.chromium.org/search/?q=file:trybots.py+linux-jumbo-rel))
-
 * [linux-libfuzzer-asan-rel](https://ci.chromium.org/p/chromium/builders/luci.chromium.try/linux-libfuzzer-asan-rel) ([`commit-queue.cfg` entry](https://cs.chromium.org/search/?q=package:%5Echromium$+file:commit-queue.cfg+chromium/try/linux-libfuzzer-asan-rel)) ([matching builders](https://cs.chromium.org/search/?q=file:trybots.py+linux-libfuzzer-asan-rel))
 
 * [linux-ozone-rel](https://ci.chromium.org/p/chromium/builders/luci.chromium.try/linux-ozone-rel) ([`commit-queue.cfg` entry](https://cs.chromium.org/search/?q=package:%5Echromium$+file:commit-queue.cfg+chromium/try/linux-ozone-rel)) ([matching builders](https://cs.chromium.org/search/?q=file:trybots.py+linux-ozone-rel))

infra/config/commit-queue.cfg

@@ -108,9 +108,6 @@ config_groups {
       builders {
         name: "chromium/try/linux-chromeos-rel"
       }
-      builders {
-        name: "chromium/try/linux-jumbo-rel"
-      }
       builders {
         name: "chromium/try/linux-libfuzzer-asan-rel"
       }