clean up tests/tests_basic.py
clean up tests/tests_basic.py

vlukes/sfepy,RexFuzzle/sfepy,vlukes/sfepy,sfepy/sfepy,BubuLK/sfepy,RexFuzzle/sfepy,vlukes/sfepy,RexFuzzle/sfepy,lokik/sfepy,rc/sfepy,sfepy/sfepy,BubuLK/sfepy,sfepy/sfepy,RexFuzzle/sfepy,lokik/sfepy,lokik/sfepy,rc/sfepy,rc/sfepy,BubuLK/sfepy,lokik/sfepy