Remove the unused "application" DisplayCaptureSurfaceType

As it was not used, the "application" DisplayCaptureSurfaceType is
removed from the code base.

Spec: https://github.com/w3c/mediacapture-screen-share/pull/215
Bug: None
Change-Id: If910dd3ab40d4e5e693bc36c128f3916d9770e08
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3876156
Reviewed-by: Elad Alon <eladalon@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Fr <beaufort.francois@gmail.com>
Cr-Commit-Position: refs/heads/main@{#1045039}
diff --git a/screen-capture/getdisplaymedia.https.html b/screen-capture/getdisplaymedia.https.html
index ebd35ff..33e70ac 100644
--- a/screen-capture/getdisplaymedia.https.html
+++ b/screen-capture/getdisplaymedia.https.html
@@ -203,7 +203,7 @@
   const settings = stream.getVideoTracks()[0].getSettings();
   assert_any(
       assert_equals, settings.displaySurface,
-      ['monitor', 'window', 'application', 'browser']);
+      ['monitor', 'window', 'browser']);
   assert_any(assert_equals, settings.logicalSurface, [true, false]);
   assert_any(assert_equals, settings.cursor, ['never', 'always', 'motion']);
 }, 'getDisplayMedia() with getSettings');