Improved AI hints for Black Cat County 1.0

AI lines in BCC could use improvement but the default AI hints are very poor. This is especially blatant in the downhill left-hand hairpin near the end where the overcautious AI hints cause them to drive very bizarrely. I have removed all of the needless hints slowing them down and toned down the hint at the hairpin. AI are much faster than with default AI hints, and no more crash prone from what I have seen. Tested with various sportscars, supercars, hypercars.

Backup the default files first!