devapp/owners: remove josharian from a few packages
devapp/owners: remove josharian from a few packages

As a reflection of reality.

Change-Id: Ic1e2b95e1a3b91c48e636cea9bcdaeca553d389b
Reviewed-on: https://go-review.googlesource.com/c/build/+/219918
Reviewed-by: Dmitri Shuralyov <d181b7fea0ec87c86ba5a890ab716db52498e3ba@golang.org>

golang/build,golang/build,golang/build,golang/build