Remove trello client

[iliakur]

What does this PR do?

Follow-up to #17615. I missed one piece of Trello.

Motivation

We no longer use Trello

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[github-actions]

The changelog type changed or removed was used in this Pull Request, so the next release will bump major version. Please make sure this is a breaking change, or use the fixed or added type instead.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.07%. Comparing base (f223704) to head (1907abe).
Report is 1 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
activemq	?
cassandra_nodetool	?
couch	?
datadog_checks_dev	77.58% <ø> (-0.06%)	⬇️
gearmand	?
harbor	?
hive	?
hivemq	?
hudi	?
ibm_ace	?
ibm_was	?
ignite	?
jboss_wildfly	?
presto	?
rabbitmq	?
ray	?
scylla	?
teamcity	?
vertica	?
voltdb	?
vsphere	?
weblogic	?
zk	?

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