Remove std::bind usages from Code/Editor (#3358)

A few small modernizations as well ( override )

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

Code/Editor/MainWindow.cpp

@@ -1767,7 +1767,7 @@ void MainWindow::RegisterOpenWndCommands()
         cmdUI.tooltip = (QString("Open ") + className).toUtf8().data();
         cmdUI.iconFilename = className.toUtf8().data();
         GetIEditor()->GetCommandManager()->RegisterUICommand("editor", openCommandName.toUtf8().data(),
-            "", "", AZStd::bind(&CEditorOpenViewCommand::Execute, pCmd), cmdUI);
+            "", "", [pCmd] { pCmd->Execute(); }, cmdUI);
         GetIEditor()->GetCommandManager()->GetUIInfo("editor", openCommandName.toUtf8().data(), cmdUI);
     }
 }