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/TrackView/TrackViewKeyPropertiesDlg.cpp

@@ -110,7 +110,7 @@ void CTrackViewKeyPropertiesDlg::PopulateVariables()
     m_wndProps->RemoveAllItems();
     m_wndProps->AddVarBlock(m_pVarBlock);
 
-    m_wndProps->SetUpdateCallback(AZStd::bind(&CTrackViewKeyPropertiesDlg::OnVarChange, this, AZStd::placeholders::_1));
+    m_wndProps->SetUpdateCallback([this](IVariable* var) { OnVarChange(var); });
     //m_wndProps->m_props.ExpandAll();