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

chrome/common/extensions/api/launcher_page.idl

Index: chrome/common/extensions/api/launcher_page.idl
diff --git a/chrome/common/extensions/api/launcher_page.idl b/chrome/common/extensions/api/launcher_page.idl
index f8a423787a7ad616aedc9ac2417a42190cae2f97..7e7896a8693666b7d405f8e393cad29c9c66d6d9 100644
--- a/chrome/common/extensions/api/launcher_page.idl
+++ b/chrome/common/extensions/api/launcher_page.idl
@@ -4,7 +4,7 @@
 
 // The <code>chrome.launcherPage</code> API provides launcher pages in the
 // Chrome Launcher with the capabilities and events they need.
-[use_movable_types=true] namespace launcherPage {
+namespace launcherPage {
   callback PushSubpageCallback = void();
   callback ShowCallback = void();
   callback HideCallback = void();