src/main/java/org/nustaq/offheap/FSTBinaryOffheapMap.java
public void removeBinary( ByteSource key ) {
        checkThread();
        if ( key.length() != keyLen )
            throw new RuntimeException("key must have length "+keyLen);
        mutationCount++;
        long rem = index.get(key);
        if ( rem != 0 ) {
            index.remove(key);
            decElems();
            removeEntry(rem);
        }
    }
public void removeBinary( ByteSource key ) {
        checkThread();
        if ( key.length() != keyLen )
            throw new RuntimeException("key must have length "+keyLen);
        mutationCount++;
        long rem = index.get(key);
        if ( rem != 0 ) {
            index.remove(key);
            decElems();
            removeEntry(rem);
        }
    }
remove the key from the binary map
@param key