Remove the scripts portion of setup.py

scripts is deprecated by entry_points, and when both exist it causes
errors for some PEP-compliant installers

Author: bkad

setup.py

@@ -99,9 +99,6 @@ def main():
                 'html_ch = jupyter_contrib_nbextensions.nbconvert_support.collapsible_headings:ExporterCollapsibleHeadings',  # noqa: E501
             ],
         },
-        scripts=[os.path.join('scripts', p) for p in [
-            'jupyter-contrib-nbextension',
-        ]],
         classifiers=[
             'Development Status :: 1 - Planning',
             'Intended Audience :: End Users/Desktop',