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

extensions/common/api/document_scan.idl

Index: extensions/common/api/document_scan.idl
diff --git a/extensions/common/api/document_scan.idl b/extensions/common/api/document_scan.idl
index da0c2c92db11f439bff1ea143dd287917fe66b27..a2bdcca45c030b843c8754b09eb971f86da9d1fb 100644
--- a/extensions/common/api/document_scan.idl
+++ b/extensions/common/api/document_scan.idl
@@ -4,7 +4,7 @@
 
 // Use the <code>chrome.documentScan</code> API to discover and retrieve
 // images from attached paper document scanners.
-[use_movable_types=true] namespace documentScan {
+namespace documentScan {
   dictionary ScanOptions {
     // The MIME types that are accepted by the caller.
     DOMString[]? mimeTypes;