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

chrome/common/extensions/api/webrtc_logging_private.idl

Index: chrome/common/extensions/api/webrtc_logging_private.idl
diff --git a/chrome/common/extensions/api/webrtc_logging_private.idl b/chrome/common/extensions/api/webrtc_logging_private.idl
index 8a76f20d22d5ba45b6403faa48376a7bd3ab3ad7..0f900f944402da663da9706a1914fad707cc5bfa 100644
--- a/chrome/common/extensions/api/webrtc_logging_private.idl
+++ b/chrome/common/extensions/api/webrtc_logging_private.idl
@@ -4,7 +4,7 @@
 
 // Use the <code>chrome.webrtcLoggingPrivate</code> API to control diagnostic
 // WebRTC logging.
-[use_movable_types=true] namespace webrtcLoggingPrivate {
+namespace webrtcLoggingPrivate {
   dictionary MetaDataEntry {
     // The meta data entry key.
     DOMString key;