Remove psutil dependency

Author: Jaipreet Singh

.travis.yml

@@ -5,7 +5,7 @@ cache:
   pip: true
   directories:
     - /home/travis/.yarn-cache/
-install: pip install pytest jupyterlab psutil
+install: pip install pytest jupyterlab
 script:
   - pytest tests/unit
   - yarn

postBuild

@@ -3,7 +3,4 @@
 jupyter labextension install @jupyterlab/git
 
 pip install jupyterlab-git
-jupyter serverextension enable --py jupyterlab_git
-
-pip install notebook
-pip install psutil
+jupyter serverextension enable --py jupyterlab_git

setup.py

@@ -15,8 +15,7 @@
     long_description_content_type="text/markdown",
     packages=setuptools.find_packages(),
     install_requires=[
-        'notebook',
-        'psutil'
+        'notebook'
     ],
     package_data={'jupyterlab_git': ['*']},
 )