Minor clean-ups.
Minor clean-ups.

amandersillinois/landlab,csherwood-usgs/landlab,Carralex/landlab,ManuSchmi88/landlab,csherwood-usgs/landlab,landlab/landlab,RondaStrauch/landlab,laijingtao/landlab,RondaStrauch/landlab,SiccarPoint/landlab,ManuSchmi88/landlab,Carralex/landlab,amandersillinois/landlab,cmshobe/landlab,landlab/landlab,RondaStrauch/landlab,ManuSchmi88/landlab,cmshobe/landlab,Carralex/landlab,SiccarPoint/landlab,landlab/landlab,cmshobe/landlab,laijingtao/landlab