Remove workaround for requests < 2.0 on python 3

[abn]

• this workaround caused systems with ndg-httpsclient installed to
  error out when requests is used
• requests versions 0.14.2 to 1.2.3 do not work due to unrelated issues
  and hence no point carrying this workaround

[abn@zoidberg temp]$ pip list
pip (6.0.8)
python-bugzilla (1.2.1)
requests (1.0.0)
setuptools (12.0.5)
[abn@zoidberg temp]$ ./temp/bin/bugzilla login foo foo
__init__() got an unexpected keyword argument 'strict'


[abn@zoidberg temp]$ pip list
pip (6.0.8)
python-bugzilla (1.2.1)
requests (1.2.3)
setuptools (12.0.5)
[abn@zoidberg temp]$ ./temp/bin/bugzilla login foo foo
__init__() got an unexpected keyword argument 'strict'

• requests version 0.14.1 and earlier works without this workaround

[abn@zoidberg temp]$ pip list
pip (6.0.8)
python-bugzilla (1.2.1)
requests (0.14.1)
setuptools (12.0.5)
[abn@zoidberg temp]$ ./temp/bin/bugzilla login foo foo
[14:39:18] INFO (bugzilla:1160) Connecting to https://bugzilla.redhat.com/xmlrpc.cgi
[14:39:18] INFO (bugzilla:1163) Autodetecting Bugzilla type
[14:39:18] INFO (__init__:46) Using RHBugzilla for URL containing bugzilla.redhat.com
[14:39:18] INFO (__init__:114) Chose subclass RHBugzilla v0.1
[14:39:18] INFO (base:672) Using username/password for authentication
[14:39:18] INFO (base:680) Logging in... 
Login failed: The username or password you entered is not valid.

[abn]

Commenting on the requests issue; kennethreitz/requests@2c5b020#diff-56e4c9a9f8955a91d87d7da5335a7dddR545 introduces the 'strict' kwarg in the VerifiedHTTPSConnection initialization but the VerifiedHTTPSConnection class definition is unaware of it.

[crobinso]

Thanks Arun, pulled this now