Add Ubox family unlimited files and delete Ubox_single files in other directory

[JohnSpintend]

Hi, The changes are:

1. Delete hw_ubox_single.c, hw_ubox_single.h files in hwconf\other directory, since I have committed one in hwconf\Ubox\75v directory, to avoid duplicating.
2. Add a hw_ubox_single_80 hw support into hwconf\Ubox\100v directory.
3. Modified MCCONF_L_MAX_VOLTAGE and HW_LIM_VIN values in hwconf/Ubox/100v/hw_ubox_100_core.h.
4. Added no_limits files for Ubox family. Thank you!

[JohnSpintend]

Thank you!