remove Content-Length patch for PUT requests

This was a bug in httplib, but it has since been fixed.
See http://bugs.python.org/issue14721 for details.

Author: mikesea

swiftype/swiftype.py

@@ -178,8 +178,6 @@ def _request(self, method, path, params={}, data={}):
     headers = {}
     headers['User-Agent'] = USER_AGENT
     headers['Content-Type'] = 'application/json'
-    if method == 'PUT' and len(data) == 0:
-      headers['Content-Length'] = 0
 
     if self.__username is not None and self.__password is not None:
       credentials = "%s:%s" % (self.__username, self.__password)