Remove missing references to download

pdfjs/web/viewer.js

@@ -10975,10 +10975,6 @@ class SecondaryToolbar {
       element: options.printButton,
       eventName: "print",
       close: true
-    }, {
-      element: options.downloadButton,
-      eventName: "download",
-      close: true
     }, {
       element: options.viewBookmarkButton,
       eventName: null,
@@ -11421,9 +11417,6 @@ class Toolbar {
     }, {
       element: options.presentationModeButton,
       eventName: "presentationmode"
-    }, {
-      element: options.download,
-      eventName: "download"
     }, {
       element: options.viewBookmark,
       eventName: null