Remove time_elasped metrics from Falco

[Kyle-Neale]

What does this PR do?

This PR removes 2 metrics with type time_elapsed since our base class can't properly convert them from nanoseconds to a useable metric.

Motivation

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.04%. Comparing base (8916382) to head (c4432ee).
Report is 9 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
activemq	?
cassandra	?
confluent_platform	?
falco	95.65% <ø> (ø)
hive	?
hivemq	?
hudi	?
ignite	?
jboss_wildfly	?
presto	?
solr	?
tomcat	?
weblogic	?

Flags with carried forward coverage won't be shown. Click here to find out more.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

Review from sarah-witt is dismissed. Related teams and files:

• agent-integrations
  • falco/changelog.d/20634.removed

[github-actions]

⚠️ Major version bump
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.

Review from sarah-witt is dismissed. Related teams and files:

• agent-integrations
  • falco/changelog.d/20634.removed

Review from steveny91 is dismissed. Related teams and files:

• agent-integrations
  • falco/changelog.d/20634.removed