diff --git a/src/main/java/net/openhft/chronicle/map/BitUnit.java b/src/main/java/net/openhft/chronicle/map/BitUnit.java
deleted file mode 100644
index 850c5c5f9..000000000
--- a/src/main/java/net/openhft/chronicle/map/BitUnit.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright 2014 Higher Frequency Trading http://www.higherfrequencytrading.com
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package net.openhft.chronicle.map;
-
-/**
- * @author Rob Austin.
- */
-public enum BitUnit {
-
-    BITS {
-        public long toBits(long v) {
-            return v;
-        }
-
-        public long toMegaBits(long v) {
-            return v / _MB;
-        }
-
-        public long toGigaBits(long v) {
-            return v / _GB;
-        }
-    },
-
-    MEGA_BITS {
-        public long toBits(long v) {
-            return v * _MB;
-        }
-
-        public long toMegaBits(long v) {
-            return v;
-        }
-
-        public long toGigaBits(long v) {
-            return v / (_GB / _MB);
-        }
-    },
-
-    GIGA_BITS {
-        public long toBits(long v) {
-            return v * _GB;
-        }
-
-        public long toMegaBits(long v) {
-            return v * (_GB / _MB);
-        }
-
-        public long toGigaBits(long v) {
-            return v;
-        }
-    };
-    private static long _KB = 1000;
-    private static long _MB = 1000 * _KB;
-    private static long _GB = 1000 * _MB;
-
-    public long toBits(long duration) {
-        throw new AbstractMethodError();
-    }
-
-    long toMegaBits(long value) {
-        throw new AbstractMethodError();
-    }
-
-    public long toGigaBits(long v) {
-        throw new AbstractMethodError();
-    }
-}