remove unused file

Svelto.ECS/EntityGroup.cs

@@ -1,29 +0,0 @@
-using System;
-using Svelto.DataStructures;
-using Svelto.ECS.Internal;
-
-namespace Svelto.ECS
-{
-    public struct EntityGroup
-    {
-        internal EntityGroup(FasterDictionary<RefWrapper<Type>, ITypeSafeDictionary> entitiesInGroupPerType, uint _groupID)
-        {
-            _group = entitiesInGroupPerType;
-            groupID = _groupID;
-        }
-
-        public ref T QueryEntity<T>(uint entityGidEntityId) where T : struct, IEntityStruct
-        {
-            return ref (_group[new RefWrapper<Type>(typeof(T))] as TypeSafeDictionary<T>).GetValueByRef(
-                entityGidEntityId);
-        }
-
-        public bool Exists<T>(uint entityGidEntityId) where T : struct, IEntityStruct
-        {
-            return (_group[new RefWrapper<Type>(typeof(T))] as TypeSafeDictionary<T>).ContainsKey(entityGidEntityId);
-        }
-
-        readonly FasterDictionary<RefWrapper<Type>, ITypeSafeDictionary> _group;
-        public uint groupID;
-    }
-}