Revert "Merge branch 'russell/add-sast-customizing-rulesets-page' into 'main'"
Reverting temporarily while Suzanne gets the docs release cut. gitlab!92881 (merged) merged too late to make it in this point release.
- Related to gitlab!92881 (merged) where the page was moved.
- Related to !2939 (merged) where the page was originally added to the nav.
Edited by Amy Qualls