delete unused function

Signed-off-by: Michael Crenshaw <350466+crenshaw-dev@users.noreply.github.com>

util/lua/lua.go

@@ -331,23 +331,6 @@ func isActionDisabled(actionsMap interface{}) bool {
 	return false
 }
 
-// iconClass gets the icon class from the actions map, if it exists
-func iconClass(actionsMap interface{}) string {
-	actions, ok := actionsMap.(map[string]interface{})
-	if !ok {
-		return ""
-	}
-	for key, val := range actions {
-		switch vv := val.(type) {
-		case string:
-			if key == "iconClass" {
-				return vv
-			}
-		}
-	}
-	return ""
-}
-
 func emptyResourceActionFromLua(i interface{}) bool {
 	_, ok := i.([]interface{})
 	return ok