Revert "Cache the layout result if the font feature is specified"

Revert submission 25211873-font_feature_cache

Reason for revert: accessing feature flag in native causes the peformance regression.

Reverted changes: /q/submissionid:25211873-font_feature_cache

Change-Id: I1f4b619c827d2968fd8b75aa05f65a2ed89b62a2