[Extensions] Remove the "use_movable_types" entry from idl/json files

chrome/common/extensions/api/copresence_private.idl

Index: chrome/common/extensions/api/copresence_private.idl
diff --git a/chrome/common/extensions/api/copresence_private.idl b/chrome/common/extensions/api/copresence_private.idl
index f6b4cb845ec91e508d44b5d0587284b906275b7c..6db3420a9fc97e5441f205fe305e6e223ec25fd4 100644
--- a/chrome/common/extensions/api/copresence_private.idl
+++ b/chrome/common/extensions/api/copresence_private.idl
@@ -4,7 +4,7 @@
 
 // Use the <code>chrome.copresencePrivate</code> API to interface with Chrome
 // from the whispernet_proxy extension.
-[use_movable_types=true]namespace copresencePrivate {
+namespace copresencePrivate {
   dictionary Token {
     DOMString token;
     boolean audible;