Speedmaster,
You are correct that Flybe. have suspended the direct EDI-BRU flights they were operating, these sectors were simply not seeing the required loads. Couple this to the fact that many travellers were using the indirect service via BHX meant it was not worth operating.
Current transfer traffic from GLA and EDI to BRU via BHX is good, and the current schedules mean connections on at least 3 daily flights in each direction. Equally so from BHD