Remove SimpleConfigReader.GetHypervisorType

We haven't had that config file entry for a while.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

lib/ssconf.py

@@ -130,9 +130,6 @@ class SimpleConfigReader(object):
   def GetFileStorageDir(self):
     return self._config_data["cluster"]["file_storage_dir"]
 
-  def GetHypervisorType(self):
-    return self._config_data["cluster"]["hypervisor"]
-
   def GetNodeList(self):
     return self._config_data["nodes"].keys()