Cleanup VizDisplayCompositor on Android.

The VizDisplayCompositor is default enabled and can't be disabled on
Android. Remove the entry in fieldtrial_testing_config.json and remove
from chrome://flags.

Bug: 936425
Change-Id: Iaf8539c36e3d30789cbcf2031c07c25f3bb8bb07
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1761558
Auto-Submit: kylechar <[email protected]>
Reviewed-by: Jesse Doherty <[email protected]>
Commit-Queue: kylechar <[email protected]>
Cr-Commit-Position: refs/heads/master@{#689675}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 45586f4..7f80f6db 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -3134,7 +3134,7 @@
 
     {"enable-viz-display-compositor",
      flag_descriptions::kVizDisplayCompositorName,
-     flag_descriptions::kVizDisplayCompositorDescription, kOsAndroid | kOsCrOS,
+     flag_descriptions::kVizDisplayCompositorDescription, kOsCrOS,
      FEATURE_VALUE_TYPE(features::kVizDisplayCompositor)},
 
     {"unified-consent", flag_descriptions::kUnifiedConsentName,