Disabled the warning messages about too many digits for TR numbers

[bieryAtFnal]

Commented out the warnings about too many digits for TR number and sequence number, since we now realize we want the config params for them to specify the minimum number of digits not a fixed number of digits.

Also, changed the documentation strings in the schema for the relevant config params to sa that the params specify the minimum number of digits.

In the future, we may change the name of the config params to have "minimum" in them, but we won't do that now, in the spirit of minimizing changes

[bieryAtFnal]

To test this, I used steps similar to numbers 1-6 on this page, then I edited the generated dataflow0_conf.json file so that the number of expected TriggerRecord digits is 2 instead of 5,

[biery@daq data]$ diff dataflow0_conf.json dataflow0_conf.json~
19c19
<                         "digits_for_record_number": 2,
---
>                         "digits_for_record_number": 5,

then I ran nanorc until more than 100 TriggerRecords were generated, and I noted the warning messages in the logs.
Then I updated the software area to use this branch, re-did the nanorc run, and verified that the warnings went away.

[eflumerf]

I would vote for either removing this line entirely, or perhaps making it a TLOG_DEBUG so we still have visibility when the minimum is insufficient.

[bieryAtFnal]

As Eric suggested, I removed the lines entirely. (And, in fact, I took the opportunity to remove a few more lines of unnecessary code.)