diff --git a/climax/core/qm.py b/climax/core/qm.py
deleted file mode 100644
index 6f7a94fc5b9f93b330ddc994d657b3af47910d28..0000000000000000000000000000000000000000
--- a/climax/core/qm.py
+++ /dev/null
@@ -1,31 +0,0 @@
-"""Empirical quantile mapping for climate model bias correction."""
-
-# !/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-# externals
-import numpy as np
-from scipy.stats.mstats import mquantiles
-
-
-def iecdf(array, probs, **kwargs):
-    """Empirical quantile function, inverse cumulative distribution function.
-
-    Parameters
-    ----------
-    array : :py:class:`numpy.ndarray`
-        Data to compute empirical quantiles.
-    probs : `int` or :py:class:`numpy.ndarray`
-        Quantile or range of quantiles to compute.
-    **kwargs : `dict`
-        Additional keyword arguments passed to
-        :py:func:`scipy.stats.mstats.mquantiles`.
-
-    Returns
-    -------
-    quantiles : :py:class:`numpy.ndarray`
-        Empirical quantiles.
-
-    """
-    return mquantiles(array, probs, **kwargs)
-