removing explicit mentions to target filename in all checks.
removing explicit mentions to target filename in all checks.

our logging system is powerful enough now to give us greater flexibility at the output formating stage instead of at check-execution time.
issue #905

graphicore/fontbakery,graphicore/fontbakery,moyogo/fontbakery,graphicore/fontbakery,moyogo/fontbakery,googlefonts/fontbakery,googlefonts/fontbakery,moyogo/fontbakery,googlefonts/fontbakery