[orca] Chromium: Remove now-obsolete hack for missing events

[Joanmarie Diggs <joanied src gnome org>]

commit f400ad5ba5f008e856d0078a0215a66117297532
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Thu Aug 29 14:23:44 2019 -0400

    Chromium: Remove now-obsolete hack for missing events

 src/orca/scripts/toolkits/Chromium/script.py | 8 --------
 1 file changed, 8 deletions(-)
---
diff --git a/src/orca/scripts/toolkits/Chromium/script.py b/src/orca/scripts/toolkits/Chromium/script.py
index a6d444703..c91ffb291 100644
--- a/src/orca/scripts/toolkits/Chromium/script.py
+++ b/src/orca/scripts/toolkits/Chromium/script.py
@@ -51,14 +51,6 @@ class Script(web.Script):
 
         self.presentIfInactive = False
 
-        # Chromium fails to emit notifications when objects are reparented,
-        # leading to dead accessibles in the ancestry.
-        app.setCacheMask(pyatspi.cache.DEFAULT ^
-                         pyatspi.cache.CHILDREN ^
-                         pyatspi.cache.NAME ^
-                         pyatspi.cache.DESCRIPTION ^
-                         pyatspi.cache.PARENT)
-
     def getBrailleGenerator(self):
         """Returns the braille generator for this script."""