Remove the cache directory size check feature

[vmanthos]

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Describe the bug

We should consider removing the cache directory size check feature since:

• We haven't been using this feature for a long time.
• With the use of Delay JavaScript Execution, which disables Combine JavaScript files, we rarely have cache directory size issues reported.

Additional context

The feature was added a long time ago to check weekly the size of the /cache/min/ directory: https://github.com/wp-media/wp-rocket/blob/develop/inc/Engine/HealthCheck/CacheDirSizeCheck.php

If that was over 10GB we would get a notification so we could investigate it and proactively add exclusions for the Combine JavaScript files feature.

Backlog Grooming (for WP Media dev team use only)

• [ ] Reproduce the problem
• [ ] Identify the root cause
• [ ] Scope a solution
• [ ] Estimate the effort

[GeekPress]

+1