remove conda update from travis setup since was causing problems
remove conda update from travis setup since was causing problems

michalmonselise/sparklingpandas,sparklingpandas/sparklingpandas,holdenk/sparklingpandas,jhlch/sparklingpandas,michalmonselise/sparklingpandas,jhlch/sparklingpandas,holdenk/sparklingpandas,sparklingpandas/sparklingpandas