Hi Mercedes,
I have not heard this. In fact my tour operator who I only ever deal with because she just seems to know everything told me British Airways were starting flying to Granada at the end of April - I have not had this verified thus far.
Having just travelled back from Spain on Friday 14th March 2008, on Ryanair, I can say the plane was packed going out and coming back. I wouldn't think Ryanair would want to pull out of what seems to be a popular route?? Having a property at Medina Elvira 23, near to Granada, I certainly hope they don't, and hope BA join in!