removing dependencies related to compatibility with old python versions we no longer support

Author: maxkahan

setup.py

@@ -28,19 +28,12 @@ def find_version(*file_paths):
     long_description = f.read()
 
 install_requires = [
-    'enum34  ; python_version < "3.4"',
     'requests',
     'six',
     'pytz',
     'python-jose'
 ]
 
-if sys.version_info[0] < 3 or sys.version_info[1] < 4:
-    install_requires.append('enum34')
-
-if sys.version_info[0] < 3:
-    install_requires.append('rsa<=4.0')
-
 setup(
     name = 'opentok',
     version = find_version('opentok', 'version.py'),