Selecting Time Remap in the Timeline (its name, which selects all its
keys) and pressing Delete removed the keys, and a second Delete then
deleted the whole layer. As in After Effects, Edit > Clear with Time
Remap selected now turns time remapping off (Layer > Time > Enable Time
Remapping off), in one undo step, and the layer stays; one selected
Time Remap key on its own is still deleted as a key.
Test: deleting_time_remap_turns_time_remapping_off (engine).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>