Remove deprecated Bfview from CL tools page (rebased onto develop)



This is the same as gh-703 but rebased onto develop.

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Bfview is apparently now deprecated but was still listed on the http://www.openmicroscopy.org/site/support/bio-formats4/users/comlinetools/index.html - this PR removes reference to it (git grep shows Bfview is now only mentioned on the version history page).