diff --git a/mdevaluate/reader.py b/mdevaluate/reader.py
index 23d2085..598072d 100755
--- a/mdevaluate/reader.py
+++ b/mdevaluate/reader.py
@@ -39,7 +39,7 @@ class WrongTopologyError(Exception):
 def open_with_mdanalysis(
     topology, trajectory, cached=False, index_file=None, charges=None, masses=None
 ):
-    """Open a the topology and trajectory with mdanalysis."""
+    """Open the topology and trajectory with mdanalysis."""
     uni = mdanalysis.Universe(topology, trajectory, convert_units=False)
     if cached is not False:
         if cached is True:
@@ -373,28 +373,3 @@ class CachedReader(BaseReader):
 
     def __getitem__(self, item):
         return self._get_item(item)
-
-
-class DelayedReader(BaseReader):
-    @property
-    def filename(self):
-        if self.rd is not None:
-            return self.rd.filename
-        else:
-            return self._filename
-
-    def __init__(self, filename, reindex=False, ignore_index_timestamps=False):
-        super().__init__(filename, reindex=False, ignore_index_timestamps=False)
-        self.natoms = len(self.rd[0].coordinates)
-        self.cache = self.rd.cache
-        self._filename = self.rd.filename
-        self.rd = None
-
-    def __len__(self):
-        return len(self.cache)
-
-    def _get_item(self, frame):
-        return read_xtcframe_delayed(self.filename, self.cache[frame], self.natoms)
-
-    def __getitem__(self, frame):
-        return self._get_item(frame)