#1056 Bug: variadic_variant doesn't use the type_id_t type to store type_id

Author: John Wellbelove

include/etl/private/variant_variadic.h

@@ -378,11 +378,6 @@ namespace etl
   {
   public:
 
-    //***************************************************************************
-    /// The type used for ids.
-    //***************************************************************************
-    using type_id_t = uint_least8_t ;
-
     //***************************************************************************
     /// get() is a friend function.
     //***************************************************************************