internal/poll: replace t.Sub(time.Now()) with time.Until in test
Change-Id: Ia383d4d322008901cd1e57b05fb522db44076fa2
GitHub-Last-Rev:
5c7cbeb7371c6afa47c280e164087e45ca89f3d2
GitHub-Pull-Request: golang/go#66375
Reviewed-on: https://go-review.googlesource.com/c/go/+/572178
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Sean Liao <sean@liao.dev>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Sean Liao <sean@liao.dev>