Remove dead code

It seems this was never used even by the commit introducing it

imports/NeoChat/Menu/TextContextMenu.qml

@@ -1,25 +0,0 @@
-// SPDX-FileCopyrightText: 2021 Carl Schwan <carl@carlschwan.eu>
-// SPDX-License-Identifier: LGPL-2.0-or-later
-
-
-/**
- * Context menu when clicking on a room in the room list
- */
-Menu {
-    id: root
-    property var selectedText
-
-    Repeater {
-        model: WebShortcutModel {
-            selectedText: root.selectedText
-        }
-        delegate: MenuItem {
-            text: model.display
-            icon.name: model.decoration
-        }
-    }
-
-    MenuSeparator {}
-
-    onClosed: destroy()
-}