Remove unnecessary __future__ imports.
Remove unnecessary __future__ imports.

hugovk/coveragepy,blueyed/coveragepy,7WebPages/coveragepy,7WebPages/coveragepy,jayhetee/coveragepy,blueyed/coveragepy,blueyed/coveragepy,nedbat/coveragepy,hugovk/coveragepy,hugovk/coveragepy,jayhetee/coveragepy,jayhetee/coveragepy,larsbutler/coveragepy,larsbutler/coveragepy,blueyed/coveragepy,larsbutler/coveragepy,nedbat/coveragepy,hugovk/coveragepy,7WebPages/coveragepy,jayhetee/coveragepy,jayhetee/coveragepy,nedbat/coveragepy,nedbat/coveragepy,nedbat/coveragepy,blueyed/coveragepy,7WebPages/coveragepy,hugovk/coveragepy,larsbutler/coveragepy,larsbutler/coveragepy