Clean up classifiers based on jupyter#57, and remove unneeded setup.py deps (since jupyter#65 isnt merged)

Author: devmonkey22

setup.py

@@ -11,19 +11,14 @@
     classifiers=[
         "Environment :: Web Environment",
         "License :: OSI Approved :: BSD License",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.4",
-        "Programming Language :: Python :: 2.7",
+        "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 3",
         "Topic :: Terminals :: Terminal Emulators/X Terminals",
     ],
     license="MIT",
     install_requires=[
         "ptyprocess;os_name!='nt'",
         "pywinpty (>=0.5);os_name=='nt'",
         "tornado (>=4)",
-        "python-interface",
-        "msgpack"
     ]
 )