Remove unused python packages from playout

- anyjson is failing with setuptools >=58, because it
dropped the use_2to3 support.
- other package are simply not used.

python_apps/pypo/setup.py

@@ -29,19 +29,13 @@ setup(
     ],
     install_requires=[
         "amqplib",
-        "anyjson",
-        "argparse",
         "configobj",
-        "docopt",
-        "future",
+        "defusedxml",
         "kombu",
         "mutagen",
-        "PyDispatcher",
-        "pyinotify",
+        "packaging",
         "pytz",
         "requests",
-        "defusedxml",
-        "packaging",
     ],
     zip_safe=False,
 )