Deleted third_party/blink/public/platform/modules/installedapp.

Directory was empty except for an obsolete OWNERS file.

Change-Id: I76483c1665466c06ffba813fc2cb2f4cf5f853c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2237538
Auto-Submit: Matt Giuca <mgiuca@chromium.org>
Commit-Queue: Rayan Kanso <rayankans@chromium.org>
Reviewed-by: Rayan Kanso <rayankans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776887}

third_party/blink/public/platform/modules/installedapp/OWNERS

-mgiuca@chromium.org
-
-# COMPONENT: Platform>Apps>AppLauncher>Install