Remove xvfb startup as now using saucelabs to run firefox
Remove xvfb startup as now using saucelabs to run firefox

clairetang6/bokeh,clairetang6/bokeh,azjps/bokeh,Karel-van-de-Plassche/bokeh,bokeh/bokeh,rs2/bokeh,ptitjano/bokeh,timsnyder/bokeh,azjps/bokeh,philippjfr/bokeh,DuCorey/bokeh,KasperPRasmussen/bokeh,ptitjano/bokeh,aavanian/bokeh,stonebig/bokeh,mindriot101/bokeh,timsnyder/bokeh,phobson/bokeh,aiguofer/bokeh,azjps/bokeh,aavanian/bokeh,jakirkham/bokeh,jakirkham/bokeh,phobson/bokeh,azjps/bokeh,ericmjl/bokeh,schoolie/bokeh,philippjfr/bokeh,justacec/bokeh,msarahan/bokeh,percyfal/bokeh,ericmjl/bokeh,stonebig/bokeh,aavanian/bokeh,KasperPRasmussen/bokeh,quasiben/bokeh,KasperPRasmussen/bokeh,stonebig/bokeh,timsnyder/bokeh,msarahan/bokeh,phobson/bokeh,draperjames/bokeh,bokeh/bokeh,rs2/bokeh,phobson/bokeh,clairetang6/bokeh,dennisobrien/bokeh,ptitjano/bokeh,mindriot101/bokeh,msarahan/bokeh,jakirkham/bokeh,DuCorey/bokeh,ptitjano/bokeh,DuCorey/bokeh,schoolie/bokeh,aiguofer/bokeh,draperjames/bokeh,philippjfr/bokeh,dennisobrien/bokeh,mindriot101/bokeh,percyfal/bokeh,DuCorey/bokeh,msarahan/bokeh,phobson/bokeh,aiguofer/bokeh,aiguofer/bokeh,jakirkham/bokeh,quasiben/bokeh,draperjames/bokeh,timsnyder/bokeh,draperjames/bokeh,DuCorey/bokeh,timsnyder/bokeh,philippjfr/bokeh,rs2/bokeh,dennisobrien/bokeh,dennisobrien/bokeh,justacec/bokeh,dennisobrien/bokeh,aavanian/bokeh,justacec/bokeh,mindriot101/bokeh,percyfal/bokeh,jakirkham/bokeh,ptitjano/bokeh,ericmjl/bokeh,rs2/bokeh,schoolie/bokeh,schoolie/bokeh,percyfal/bokeh,bokeh/bokeh,KasperPRasmussen/bokeh,rs2/bokeh,justacec/bokeh,clairetang6/bokeh,bokeh/bokeh,bokeh/bokeh,aavanian/bokeh,Karel-van-de-Plassche/bokeh,schoolie/bokeh,quasiben/bokeh,draperjames/bokeh,percyfal/bokeh,Karel-van-de-Plassche/bokeh,Karel-van-de-Plassche/bokeh,ericmjl/bokeh,ericmjl/bokeh,stonebig/bokeh,KasperPRasmussen/bokeh,aiguofer/bokeh,azjps/bokeh,philippjfr/bokeh,Karel-van-de-Plassche/bokeh