Revert "Track WinRT device connection status"

This reverts commit 2f4e14b295bb503f51758a69a650dc1dda31b09a.

Reason for revert: Most likely culprit for the consistently failing Windows devices tests (also bluetooth-related).

Original change's description:
> Track WinRT device connection status
> 
> Windows sometimes sends OnConnectionStatusChange events when the status
> has not changed. Previously we had assumed the status changed and acted
> accordingly.  This change keeps track of the connection status and if
> OnConnctionStatusChange fires with the same status it is now ignored.
> 
> Bug: 127810
> Change-Id: I64c5b3d99e0ac827f05ca1618d570ff83296a053
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1939827
> Reviewed-by: Ovidio de Jesús Ruiz-Henríquez <odejesush@chromium.org>
> Commit-Queue: James Hollyer <jameshollyer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#720876}

TBR=odejesush@chromium.org,jameshollyer@chromium.org

Change-Id: I8add21a3922e2a2c56ad72cd8e986e4a7b67a228
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 127810
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1947648
Reviewed-by: Friedrich [CET] <fhorschig@chromium.org>
Commit-Queue: Friedrich [CET] <fhorschig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#720898}
8 files changed