Use pyflakes instead of pylint.

Author: dilawar

test.sh

@@ -18,14 +18,11 @@ fi
 
 # travis.yml should install FindSim
 $PYTHON -m pip install Jinja2 --upgrade
-$PYTHON -m pip install pylint --upgrade
+$PYTHON -m pip install pyflakes --upgrade
 # $PYTHON -m pip install mpld3
 # $PYTHON -m pip install pymoose --pre --upgrade
 
-find . -type f -name "*.py" | xargs -I file $PYTHON -m pylint \
-    --disable=no-member \
-    --exit-zero \
-    -E file
+find . -type f -name "*.py" | xargs -I file $PYTHON -m pyflakes file
 
 # Run it in ./TestTSV directory.
 for _tsv in $(find ./TestTSV -name *.tsv -type f); do