diff --git a/pylot/__init__.py b/pylot/__init__.py
index 1297ecab..788a394f 100755
--- a/pylot/__init__.py
+++ b/pylot/__init__.py
@@ -26,7 +26,6 @@ The development of PyLoT is part of the joint research project MAGS2.
     (http://www.gnu.org/copyleft/lesser.html)
 '''
 
-import os.path as osp
 from obspy.core.utcdatetime import UTCDateTime
 from obspy.core.util.attribdict import AttribDict
 #from pylot.core.trace import Stats, Trace
diff --git a/pylot/core/stream.py b/pylot/core/stream.py
deleted file mode 100755
index fcfc41b0..00000000
--- a/pylot/core/stream.py
+++ /dev/null
@@ -1,13 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-Created on Fri Nov  8 15:13:13 2013
-
-@author: sebastianw
-"""
-
-from obspy.core import Stream as Obspystream
-
-
-class Stream(Obspystream):
-    pass
-
diff --git a/pylot/core/trace.py b/pylot/core/trace.py
deleted file mode 100755
index 8f961d30..00000000
--- a/pylot/core/trace.py
+++ /dev/null
@@ -1,18 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-Created on Fri Nov  8 15:12:43 2013
-
-@author: sebastianw
-"""
-
-from obspy.core import Trace as Obspytrace
-from obspy.core.util import AttribDict
-
-
-class Stats(AttribDict):
-    pass
-
-
-class Trace(Obspytrace):
-    pass
-         
\ No newline at end of file