diff --git a/BiDictionary.cs b/BiDictionary.cs
deleted file mode 100644
index 1bdd4b8..0000000
--- a/BiDictionary.cs
+++ /dev/null
@@ -1,51 +0,0 @@
-//
-// Source: https://stackoverflow.com/questions/255341/getting-multiple-keys-of-specified-value-of-a-generic-dictionary#255630
-//
-using System;
-using System.Collections.Generic;
-
-namespace LightReflectiveMirror
-{
-    class BiDictionary<TFirst, TSecond>
-    {
-        IDictionary<TFirst, TSecond> firstToSecond = new Dictionary<TFirst, TSecond>();
-        IDictionary<TSecond, TFirst> secondToFirst = new Dictionary<TSecond, TFirst>();
-
-        public void Add(TFirst first, TSecond second)
-        {
-            if (firstToSecond.ContainsKey(first) ||
-                secondToFirst.ContainsKey(second))
-            {
-                throw new ArgumentException("Duplicate first or second");
-            }
-            firstToSecond.Add(first, second);
-            secondToFirst.Add(second, first);
-        }
-
-        public bool TryGetByFirst(TFirst first, out TSecond second)
-        {
-            return firstToSecond.TryGetValue(first, out second);
-        }
-
-        public void Remove(TFirst first)
-        {
-            secondToFirst.Remove(firstToSecond[first]);
-            firstToSecond.Remove(first);
-        }
-
-        public bool TryGetBySecond(TSecond second, out TFirst first)
-        {
-            return secondToFirst.TryGetValue(second, out first);
-        }
-
-        public TSecond GetByFirst(TFirst first)
-        {
-            return firstToSecond[first];
-        }
-
-        public TFirst GetBySecond(TSecond second)
-        {
-            return secondToFirst[second];
-        }
-    }
-}
\ No newline at end of file