Revert "Throttle submits from the CQ."

This reverts commit bb13d209.

Reason for revert: Get back to normal

Original change's description:
> Throttle submits from the CQ.
>
> There is likely to be a large backlog of CLs to submit that built up
> during the network outage. Throttling the submits that land will prevent
> large blamelists for CI runs.
>
> Bug: 1108842
> Change-Id: I117c89082640bb30daf12b2bf5daa2e1b25c323f
> No-Try: true
> No-Tree-Checks: true
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2317760
> Auto-Submit: Garrett Beaty <gbeaty@chromium.org>
> Reviewed-by: Erik Staab <estaab@chromium.org>
> Reviewed-by: Ben Pastene <bpastene@chromium.org>
> Commit-Queue: Erik Staab <estaab@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#791308}

TBR=estaab@chromium.org,bpastene@chromium.org,gbeaty@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1108842
Change-Id: I17dcb58de486345e71c0551fb9d2501cc259a1dc
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2320069
Commit-Queue: Garrett Beaty <gbeaty@chromium.org>
Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791819}

infra/config/generated/commit-queue.cfg

@@ -6,9 +6,9 @@
 
 cq_status_host: "chromium-cq-status.appspot.com"
 submit_options {
-  max_burst: 1
+  max_burst: 2
   burst_delay {
-    seconds: 300
+    seconds: 60
   }
 }
 config_groups {

infra/config/main.star

@@ -73,8 +73,8 @@ luci.project(
 )
 
 luci.cq(
-    submit_max_burst = 1,
-    submit_burst_delay = 5 * time.minute,
+    submit_max_burst = 2,
+    submit_burst_delay = time.minute,
     status_host = 'chromium-cq-status.appspot.com',
 )