api/appstartup.py: PEP8 fixes, remove unsused import.
api/appstartup.py: PEP8 fixes, remove unsused import.

PyCharm reports PEP8 indentation fixes. Fix them along with unused import
statement.

boun-cmpe-soslab/drenaj,boun-cmpe-soslab/drenaj,boun-cmpe-soslab/drenaj,boun-cmpe-soslab/drenaj