Delete Unused Flag related to Altering how the workspace is loaded.

This flagged feature was never released, and instead was thought to be too
complicated compared to the benefits in decreased latency.

Bug: 251502424
Test: Verified that this launcher still loads properly when this flag is removed.
Flag: EXEMPT flag removal
Change-Id: I672708e26cb37d1e2b22c4510f9c3500edd4f959