Revert "[PWA/NavCapture] Implement tabbed mode testing"

This reverts commit 3d1b3e1753223411ad9748fbd6e91eaac7c94a18.

Reason for revert: causing failures on ci / Linux Tests (Wayland).
https://ci.chromium.org/ui/p/chromium/builders/ci/Linux%20Tests%20(Wayland)/71502/overview

Original change's description:
> [PWA/NavCapture] Implement tabbed mode testing
>
> This change implements installing app B with a manifest display mode of
> 'tabbed', and also has a configuration for a home tab pattern.
>
> Then it adds tests that 'should' exercise all of the parts of navigation
> capturing with tabbed mode.
>
> Currently the change seems to never capture into an app.
>
> R=mek@chromium.org
>
> Bug: 357679916
> Change-Id: I489f86a2d87984ceccf175e9a6ba9891633a90e1
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6245373
> Commit-Queue: Daniel Murphy <dmurph@chromium.org>
> Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1418705}

Bug: 357679916
Change-Id: I1d172f0a226dc8b9fa438200385d8d245f8d0c05
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6248186
Owners-Override: Keren Zhu <kerenzhu@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Keren Zhu <kerenzhu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1418816}