fix setuptools deprecations (#877)

Signed-off-by: mosfet80 <[email protected]>

Author: mosfet80

rosidl_cli/setup.py

@@ -7,6 +7,9 @@
     packages=find_packages(exclude=['test']),
     extras_require={
         'completion': ['argcomplete'],
+        'test': [
+            'pytest',
+        ],
     },
     data_files=[
         ('share/ament_index/resource_index/packages', [
@@ -32,14 +35,12 @@
     classifiers=[
         'Environment :: Console',
         'Intended Audience :: Developers',
-        'License :: OSI Approved :: Apache Software License',
         'Programming Language :: Python',
     ],
     description='Command line tools for ROS interface generation.',
     long_description="""\
 The tooling provides a single command line script for ROS interface source code generation.""",
     license='Apache License, Version 2.0',
-    tests_require=['pytest'],
     entry_points={
         'console_scripts': [
             'rosidl = rosidl_cli.cli:main',