Revert "Reland enable DisplayList by default (flutter#27407)" (flutter#27475)

This reverts commit 7e252b5.

Author: flar

common/settings.h

@@ -166,7 +166,7 @@ struct Settings {
   bool enable_skparagraph = false;
 
   // Selects the DisplayList for storage of rendering operations.
-  bool enable_display_list = true;
+  bool enable_display_list = false;
 
   // All shells in the process share the same VM. The last shell to shutdown
   // should typically shut down the VM as well. However, applications depend on