[RTA/DPA BW tests]: Restore nano lumi line

Only relevant after lhcb/Moore!4248 (merged) is merged

Since Moore moved to master and thus introduced IOAlg, there have been ~harmless errors in the bandwidth tests that look like:

Obtaining rates and bandwidth for production-stream configuration
Stream name: full
...
Hlt2DecReportsDecoder                 ERROR Hlt2DecReportsDecoder :  No HltDecReports RawBank with sourceID 2 found
Hlt2DecReportsDecoder                 ERROR Maximum number of errors ( 'ErrorMax':1) reached.
EventLoopMgr                        WARNING Execution of algorithm Hlt2DecReportsDecoder failed
HltPackedBufferDecoder_c28cc4da     WARNING No HltPackedData raw bank (the DstData bank) in raw event.
UnpackDstDataBank_9a63acfd          WARNING Empty Buffers -- presumably DstData bank has no payload
EventLoopMgr                          ERROR Error processing event loop.
EventLoopMgr                          ERROR Terminating event processing loop due to errors
EventLoopMgr                          ERROR Terminating event processing loop due to errors

as reported/discussed a bit in #35. These have been found to be caused by the "nanofied" Hlt2LuminosityLine, which has no raw banks. IOAlg is not happy that some events firing only this trigger have no raw banks, whereas it is configured to expect raw banks, and events firing other lines do have some raw banks.

This is potentially an issue that is beyond our control - it seems like an incompatibility between Moore and IOAlg. For now, in lhcb/Moore!4248 (merged) we remove this line from all streams at HLT2.

It's not good to change the line configuration from what runs in the pit, so this workaround should be removed ASAP.