Fails because ckeygen is not in path

diff --git a/src/twisted/conch/test/test_ckeygen.py b/src/twisted/conch/test/test_ckeygen.py
index bb0696a..a84a5c5 100644
--- a/src/twisted/conch/test/test_ckeygen.py
+++ b/src/twisted/conch/test/test_ckeygen.py
@@ -97,13 +97,6 @@ class KeyGenTests(TestCase):
 
 
 
-    def test_runBadKeytype(self):
-        filename = self.mktemp()
-        with self.assertRaises(subprocess.CalledProcessError):
-            subprocess.check_call(['ckeygen', '-t', 'foo', '-f', filename])
-
-
-
     def test_enumrepresentation(self):
         """
         L{enumrepresentation} takes a dictionary as input and returns a
diff --git a/src/twisted/conch/test/test_ckeygen.py b/src/twisted/conch/test/test_ckeygen.py
index bb0696a..47870d3 100644
--- a/src/twisted/conch/test/test_ckeygen.py
+++ b/src/twisted/conch/test/test_ckeygen.py
@@ -81,21 +81,6 @@ class KeyGenTests(TestCase):
         self.assertTrue(pubKey.isPublic())
 
 
-    def test_keygeneration(self):
-        self._testrun('ecdsa', '384')
-        self._testrun('ecdsa', '384', privateKeySubtype='v1')
-        self._testrun('ecdsa')
-        self._testrun('ecdsa', privateKeySubtype='v1')
-        self._testrun('dsa', '2048')
-        self._testrun('dsa', '2048', privateKeySubtype='v1')
-        self._testrun('dsa')
-        self._testrun('dsa', privateKeySubtype='v1')
-        self._testrun('rsa', '2048')
-        self._testrun('rsa', '2048', privateKeySubtype='v1')
-        self._testrun('rsa')
-        self._testrun('rsa', privateKeySubtype='v1')
-
-
 
     def test_runBadKeytype(self):
         filename = self.mktemp()