chore: remove unused logic used for gradual api-stripping migration#24127

Hotell wants to merge 18 commits into

microsoft:mastermicrosoft/fluentui:masterfrom

Hotell:hotell/build/api-stripping-undo-gradual-migration-logicHotell/fluentui:hotell/build/api-stripping-undo-gradual-migration-logicCopy head branch name to clipboard