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

chrome/common/extensions/api/language_settings_private.idl

Index: chrome/common/extensions/api/language_settings_private.idl
diff --git a/chrome/common/extensions/api/language_settings_private.idl b/chrome/common/extensions/api/language_settings_private.idl
index 91fec6a8891e0284c02d5fade558593ec6ec3c3f..f1ac49cf3eac931cb4e610e007feedb2fd8b223b 100644
--- a/chrome/common/extensions/api/language_settings_private.idl
+++ b/chrome/common/extensions/api/language_settings_private.idl
@@ -4,7 +4,7 @@
 
 // Use the <code>chrome.languageSettingsPrivate</code> API to get or change
 // language and input method settings.
-[use_movable_types=true] namespace languageSettingsPrivate {
+namespace languageSettingsPrivate {
   dictionary Language {
     // The unique code identifying the language.
     DOMString code;