Remove unused nav arg from 'select folder'

app/src/main/java/org/mozilla/fenix/library/bookmarks/addfolder/AddBookmarkFolderFragment.kt

@@ -69,7 +69,6 @@ class AddBookmarkFolderFragment : Fragment(R.layout.fragment_edit_bookmark) {
                     R.id.bookmarkAddFolderFragment,
                     AddBookmarkFolderFragmentDirections
                         .actionBookmarkAddFolderFragmentToBookmarkSelectFolderFragment(
-                            BookmarkRoot.Root.id,
                             true
                         )
                 )

app/src/main/java/org/mozilla/fenix/library/bookmarks/edit/EditBookmarkFragment.kt

@@ -106,7 +106,7 @@ class EditBookmarkFragment : Fragment(R.layout.fragment_edit_bookmark) {
                     nav(
                         R.id.bookmarkEditFragment,
                         EditBookmarkFragmentDirections
-                            .actionBookmarkEditFragmentToBookmarkSelectFolderFragment(null)
+                            .actionBookmarkEditFragmentToBookmarkSelectFolderFragment()
                     )
                 }
             }

app/src/main/res/navigation/nav_graph.xml

@@ -298,10 +298,6 @@
         android:name="org.mozilla.fenix.library.bookmarks.selectfolder.SelectBookmarkFolderFragment"
         android:label="@string/bookmark_select_folder_fragment_label"
         tools:layout="@layout/fragment_select_bookmark_folder">
-        <argument
-            android:name="folderGuid"
-            app:argType="string"
-            app:nullable="true" />
         <action
             android:id="@+id/action_bookmarkSelectFolderFragment_self"
             app:destination="@id/bookmarkSelectFolderFragment" />