runtime: remove scase.releasetime field
This is the gofrontend version of https://golang.org/cl/245122.
Original CL description:
selectgo will report at most one block event, so there's no need to
keep a releasetime for every select case. It suffices to simply track
the releasetime of the case responsible for the wakeup.
This is being brought over to gofrontend as a step toward upgrading to
Trust: Ian Lance Taylor <email@example.com>
Reviewed-by: Than McIntosh <firstname.lastname@example.org>
2 files changed