pyflakes: Remove imports of unused modules

Change-Id: I7496030e5857078cd66a36a5e46c9a50217ce6e3
diff --git a/src/osmo_gsm_tester/template.py b/src/osmo_gsm_tester/template.py
index 0ddfc84..c890963 100644
--- a/src/osmo_gsm_tester/template.py
+++ b/src/osmo_gsm_tester/template.py
@@ -18,8 +18,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import os, sys
-from mako.template import Template
+import os
 from mako.lookup import TemplateLookup
 
 from . import log