Remove unnecessary try-catch in hdpmodel

[tarohi24]

I stopped to use time.clock().

Addresses #2730

[gojomo]

#2715, if merged, also removes these try``catch blocks, with a slightly-different (perf_counter) replacement for time.clock().

[mpenkov]

Closing this in favor of #2713

@tarohi24 Thank you for your effort!　よろしくお願いします！

[ecederstrand]

I think this merge request meant to auto-close #2715, not #2713?