CI: tools: Remove a long but obsolete comment from travis-test.sh
CI: tools: Remove a long but obsolete comment from travis-test.sh

rgommers/numpy,numpy/numpy,charris/numpy,endolith/numpy,mhvk/numpy,mhvk/numpy,numpy/numpy,numpy/numpy,mattip/numpy,endolith/numpy,rgommers/numpy,rgommers/numpy,mattip/numpy,rgommers/numpy,numpy/numpy,mattip/numpy,anntzer/numpy,endolith/numpy,anntzer/numpy,charris/numpy,charris/numpy,charris/numpy,mhvk/numpy,endolith/numpy,mhvk/numpy,anntzer/numpy,anntzer/numpy,mattip/numpy,mhvk/numpy