Remove unused imports from IPython.config

IPython/config/loader.py

@@ -30,7 +30,7 b' import sys'
 
 from IPython.external import argparse
 from IPython.utils.path import filefind, get_ipython_dir
-from IPython.utils import py3compat, text, warn
+from IPython.utils import py3compat, warn
 from IPython.utils.encoding import DEFAULT_ENCODING
 
 #-----------------------------------------------------------------------------
@@ -498,8 +498,6 b' class KeyValueConfigLoader(CommandLineConfigLoader):'
             or dicts.  When the flag is triggered, The config is loaded as
             `self.config.update(cfg)`.
         """
-        from IPython.config.configurable import Configurable
-
         self.clear()
         if argv is None:
             argv = self.argv

IPython/config/tests/test_application.py

@@ -28,7 +28,7 b' from IPython.config.application import ('
 )
 
 from IPython.utils.traitlets import (
-    Bool, Unicode, Integer, Float, List, Dict
+    Bool, Unicode, Integer, List, Dict
 )
 
 #-----------------------------------------------------------------------------

IPython/config/tests/test_configurable.py

@@ -161,7 +161,6 b' class TestConfigurable(TestCase):'
 class TestSingletonConfigurable(TestCase):
 
     def test_instance(self):
-        from IPython.config.configurable import SingletonConfigurable
         class Foo(SingletonConfigurable): pass
         self.assertEqual(Foo.initialized(), False)
         foo = Foo.instance()

IPython/config/tests/test_loader.py

@@ -28,8 +28,6 b' from nose import SkipTest'
 
 from IPython.testing.tools import mute_warn
 
-from IPython.utils.traitlets import Unicode
-from IPython.config.configurable import Configurable
 from IPython.config.loader import (
     Config,
     PyFileConfigLoader,