Remove templating of FTReadoutMap

Goes with LHCb!4096 (merged)

mentioned in merge request LHCb!4096 (merged)

added RTA label

• [2023-05-01 11:11] Validation started with lhcb-master-mr#7745
• [2023-05-10 17:10] Validation started with lhcb-master-mr#7815
• [2023-05-11 10:51] Validation started with lhcb-master-mr#7818
• [2023-05-12 09:42] Validation started with lhcb-master-mr#7831
• [2023-05-12 23:40] Validation started with lhcb-master-mr#7844
• [2023-05-13 00:52] Validation started with lhcb-master-mr#7844
• [2023-05-15 10:01] Validation started with lhcb-master-mr#7851

mentioned in issue Moore#563 (closed)

mentioned in issue Moore#574 (closed)

mentioned in commit Rec@fe4633a2

mentioned in merge request Rec!3412 (merged)

merged

mentioned in commit 2819937c

mentioned in commit Rec@c4108603

mentioned in commit Rec@fa96e4dd

mentioned in commit Rec@2041e518