changelog-generator: Don't output the range we check for every repo.
changelog-generator: Don't output the range we check for every repo.

It's pretty solid now that it's using the release_tool to query the
range, so we don't need this debug info anymore.

Changelog: None

Signed-off-by: Kristian Amlie <505e66ae45028a0596c853559221f0b72c1cee21@northern.tech>

pasinskim/integration,GregorioDiStefano/integration,pasinskim/integration,GregorioDiStefano/integration,pasinskim/integration