Tuning .travis more to decrease setup time

Author: aaltat

.travis.yml

@@ -69,7 +69,6 @@ before_script:
   - if [ "$JYTHON" == "true" ]; then
       $INTERPRETER -m pip install mockito;
       python -m pip install robotstatuschecker;
-      $INTERPRETER -m pip install -r requirements.txt;
     else
       $INTERPRETER -m pip install -r requirements-dev.txt;
     fi