Revert "[Fuchsia] Migrate to ViewsV2"

This reverts commit cf0774f73dfd3f146726e649e476a1ff1a1d155f.

Reason for revert: Doesn't show anything on the screen.

Original change's description:
> [Fuchsia] Migrate to ViewsV2
> 
> Now Ozone Scenic platform uses ViewsV2 (i.e. Scenic instead of
> ViewManager) to manage Views.
> 
> Bug: 899348
> Change-Id: I6d511aed1245bc1781c78725400e8bf474272aae
> Reviewed-on: https://chromium-review.googlesource.com/c/1344887
> Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
> Reviewed-by: Michael Spang <spang@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#631457}

TBR=spang@chromium.org,sergeyu@chromium.org,dworsham@google.com

Change-Id: If3c6864b037a3328489f2cec2d5fa7a2fb96ba48
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 899348
Reviewed-on: https://chromium-review.googlesource.com/c/1471025
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#631859}
8 files changed