Return Array.Empty<T>

src/Xunit.Combinatorial/CombinatorialMemberDataAttribute.cs

@@ -55,11 +55,7 @@ public CombinatorialMemberDataAttribute(string memberName, params object?[]? arg
 
         if (type is null)
         {
-#if NETSTANDARD
             return Array.Empty<object?>();
-#else
-                return new object[0];
-#endif
         }
 
         Func<object>? accessor = this.GetPropertyAccessor(type, parameterInfo) ?? this.GetMethodAccessor(type, parameterInfo) ?? this.GetFieldAccessor(type, parameterInfo);