Disable srnaseq recipe until mirbase back up
Disable srnaseq recipe until mirbase back up

mirbase.org is currently down. Fixes chapmanb/bcbio-nextgen#1716
Fixes chapmanb/bcbio-nextgen#1718

rchekaluk/cloudbiolinux,chapmanb/cloudbiolinux,chapmanb/cloudbiolinux,chapmanb/cloudbiolinux,rchekaluk/cloudbiolinux,rchekaluk/cloudbiolinux,rchekaluk/cloudbiolinux,chapmanb/cloudbiolinux