diff --git a/modoboa/lib/test_utils.py b/modoboa/lib/test_utils.py
index c9b9b2e70..55c2ab16d 100644
--- a/modoboa/lib/test_utils.py
+++ b/modoboa/lib/test_utils.py
@@ -6,46 +6,6 @@ import tempfile
 from .sysutils import exec_cmd
 
 
-class TestRunnerMixin(object):
-
-    """A test runner for extensions (travis only)."""
-
-    dbtype = "postgres"
-    dbhost = "localhost"
-    projname = "modoboa_test"
-    dbuser = "postgres"
-    dbpassword = ""
-
-    dependencies = []
-
-    def setUp(self):
-        """Test setup."""
-        self.workdir = tempfile.mkdtemp()
-
-    def test(self):
-        """Run extensions tests."""
-        dburl = "default:{0}://{1}:{2}@{3}/{4}".format(
-            self.dbtype, self.dbuser, self.dbpassword, self.dbhost,
-            self.projname
-        )
-        cmd = (
-            "modoboa-admin.py deploy --collectstatic "
-            "--dburl {0} --extensions {1} --dont-install-extensions "
-            "--domain {2} {3}"
-            .format(
-                dburl, " ".join(self.dependencies + [self.extension]),
-                "localhost", self.projname
-            )
-        )
-        code, output = exec_cmd(cmd, cwd=self.workdir)
-        self.assertEqual(code, 0)
-
-        path = os.path.join(self.workdir, self.projname)
-        cmd = "python manage.py test {0}.tests".format(self.extension)
-        code, output = exec_cmd(cmd, capture_output=False, cwd=path)
-        self.assertEqual(code, 0)
-
-
 class MapFilesTestCaseMixin(object):
 
     """A generic test case to check map files generation."""