Revert "[SR-15703] Fix missing hop in error path of foreign async throws call"
This reverts commit afd26d397475fc7a54538718df45f1f0f66e36a8 to solve
a critical miscompile caused by a hop_to_executor appearing between
a get_continuation and await_continuation instruction in SIL.
A reimplementation of SR-15703 will be forthcoming.
Fixes rdar://91502776