travis: remove tip from allowed failures
travis: remove tip from allowed failures

dlsniper/delve,go-delve/delve,go-delve/delve,alexbrainman/delve,aarzilli/delve,go-delve/delve,dr2chase/delve,visualfc/delve,dr2chase/delve,go-delve/delve,alexbrainman/delve,aarzilli/delve,ggndnn/delve,ggndnn/delve,ignatov/delve,visualfc/delve,ignatov/delve,ignatov/delve,aarzilli/delve,alexbrainman/delve,dlsniper/delve,visualfc/delve,aarzilli/delve,go-delve/delve,derekparker/delve,derekparker/delve,ggndnn/delve,derekparker/delve,dr2chase/delve,dlsniper/delve