all: delete more windows/arm remnants

all: delete more windows/arm remnants

Updates #71671

Change-Id: I663c4a659ad45bcebfc03d6eb4783e5f5d3afa0d
Reviewed-on: https://go-review.googlesource.com/c/go/+/699176
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>