Revert "Add experimental flag to enable Chromecast in about:flags"

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 52620b1d1dea74eb06900ec17254d42452ca3d13..467e28de1eb53d3d584055be34e5f49dc6e4b65d 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -6709,14 +6709,6 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_DISABLE_USER_IMAGE_SYNC_DESCRIPTION" desc="Description for the flag to disable sync of user account image.">
         Disables sync of user account image between different ChromeOS devices.
       </message>
-      <if expr="is_android">
-        <message name="IDS_FLAGS_ENABLE_CAST_NAME" desc="Name of the flag to enable Chromecast support.">
-          Enable Chromecast support
-        </message>
-        <message name="IDS_FLAGS_ENABLE_CAST_DESCRIPTION" desc="Description for the flag to disable playing videos remotely on Chromecast.">
-          Enable playing videos remotely on Chromecast.
-        </message>
-      </if>
       <if expr="pp_ifdef('chromeos')">
         <message name="IDS_FLAGS_DISABLE_FIRST_RUN_UI_NAME" desc="Name of the flag to disable new first-run UI.">
           Disable new first-run UI.