Revert "tools/ceph_objectstore_took: Add duplicate entry trimming"

Revert "tools/ceph_objectstore_took: Add duplicate entry trimming"

This reverts commit 1f3fede173cf8224f4c9f1d24b30d6fa8dfda216.

Although the chunking in off-line `dups` trimming (via COT) seems
fine, the `ceph-objectstore-tool` is a client of `trim()` of
`PGLog::IndexedLog` which means than a partial revert is not
possible without extensive changes. Moreover, trimming pg log
is not enough without modifying pg_info_t accordingly which
the reverted patch lacks.

The backport ticket is: https://tracker.ceph.com/issues/55989

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>