Update pip classifiers

Author: btalb

setup.py

@@ -4,7 +4,7 @@
     long_description = fh.read()
 
 setup(name='benchbot_api',
-      version='2.0.0',
+      version='2.1.0',
       author='Ben Talbot',
       author_email='b.talbot@qut.edu.au',
       description='The BenchBot API for use with the BenchBot software stack',
@@ -16,13 +16,7 @@
           'scipy>=1.2.0'
       ],
       classifiers=(
-          "Programming Language :: Python :: 2",
-          "Programming Language :: Python :: 2.7",
           "Programming Language :: Python :: 3",
-          "Programming Language :: Python :: 3.3",
-          "Programming Language :: Python :: 3.4",
-          "Programming Language :: Python :: 3.5",
-          "Programming Language :: Python :: 3.6",
           "License :: OSI Approved :: BSD License",
           "Operating System :: OS Independent",
       ))