Remove unused imports

jupyterlab/labapp.py

@@ -6,13 +6,12 @@
 
 from notebook.notebookapp import NotebookApp, flags
 from jupyter_core.application import JupyterApp
-from jupyter_core.paths import ENV_CONFIG_PATH
 
 from traitlets import Bool, Unicode
 
 from ._version import __version__
 from .extension import load_jupyter_server_extension
-from .commands import build, clean, describe, DEFAULT_CONFIG_PATH
+from .commands import build, clean, describe
 
 
 class LabBuildApp(JupyterApp):