Revert "[QuickStart] Add GetFeatureSupportStatusAsync"

This reverts commit 24a7ff44.

Reason for revert: the CL breaks the build:
https://ci.chromium.org/p/chrome/builders/ci/linux-chromeos-chrome

Original change's description:
> [QuickStart] Add GetFeatureSupportStatusAsync
>
> * Report the feature support status via callback.
> * Implement the callbacks logic in the super class to cover both fake
> and real implementation
> * Add initial_support_status into
> FakeTargetDeviceConnectionBroker::Factory for testing
> * Tweak the browsertest to cover the async logic
>
>
> Bug: b:238849500
> Change-Id: I85417cdb70d849ef8abe336a54217ea13881f724
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3876065


> Commit-Queue: Roman Sorokin <rsorokin@google.com>
> Reviewed-by: Brittany Hartmire <bhartmire@google.com>
> Cr-Commit-Position: refs/heads/main@{#1045763}

Bug: b:238849500
Change-Id: I19841295e475a5080ee0cc1c51bbd491396effca
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3891011


Reviewed-by: Andreea Costinas <acostinas@google.com>
Owners-Override: Michael Ershov <miersh@google.com>
Commit-Queue: Michael Ershov <miersh@google.com>
Cr-Commit-Position: refs/heads/main@{#1045776}