Update 2018-03-28-dc-genomics-ucdavis.md
Update 2018-03-28-dc-genomics-ucdavis.md

remove cohen
ErinBecker/datacarpentry.github.io,datacarpentry/datacarpentry.github.io,ErinBecker/datacarpentry.github.io,ErinBecker/datacarpentry.github.io,datacarpentry/datacarpentry.github.io,ErinBecker/datacarpentry.github.io,datacarpentry/datacarpentry.github.io