/usr/share/lintian/overrides/unoconv is in unoconv 0.6-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | unoconv: conflicts-with-version odt2txt (<= 0.3-1)
unoconv: manpage-has-errors-from-man
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