bisect--helper: retire `--check-and-set-terms` subcommand

bisect--helper: retire `--check-and-set-terms` subcommand

The `--check-and-set-terms` subcommand is no longer from the
git-bisect.sh shell script. Instead the function
`check_and_set_terms()` is called from the C implementation.

Mentored-by: Lars Schneider <redacted>
Mentored-by: Christian Couder <redacted>
Mentored-by: Johannes Schindelin <redacted>
Signed-off-by: Pranit Bauva <redacted>
Signed-off-by: Tanushree Tumane <redacted>
Signed-off-by: Miriam Rubio <redacted>
Signed-off-by: Junio C Hamano <redacted>