Details:
This is leftover from the conversion from AthAlgorithm to HLT::AllTEAlgo.
Now fixed by:
- check StatusCode from retrieve(), and abort where necessary
- check StatusCode from doRawMon, doCnvMon, doSimMon, etc. and print message
- change bookAndRegisterHist to return bool (was already un-checked)
- change monitorROBs, monitorBlock to void
Surprising it didn't show up when running `trigtest.pl`.

Former-commit-id: a0503e0e