Modified code style for better in multipath

Removed an unnecessary else after a return, in multipath utils.
Signed-off-by: NNarasimhan V <sim@linux.vnet.ibm.com>

avocado/utils/multipath.py

@@ -30,8 +30,7 @@ def get_svc_name():
     """
     if distro.detect().name == 'Ubuntu':
         return "multipath-tools"
-    else:
-        return "multipathd"
+    return "multipathd"
 
 
 def form_conf_mpath_file(blacklist="", defaults_extra=""):