Remove example notebooks execution from travis script
Remove example notebooks execution from travis script

mia1rab/seaborn,anntzer/seaborn,mwaskom/seaborn,lukauskas/seaborn,petebachant/seaborn,parantapa/seaborn,q1ang/seaborn,olgabot/seaborn,arokem/seaborn,gef756/seaborn,sinhrks/seaborn,wrobstory/seaborn,mclevey/seaborn,ashhher3/seaborn,mwaskom/seaborn,oesteban/seaborn,muku42/seaborn,dhimmel/seaborn,phobson/seaborn,tim777z/seaborn,lukauskas/seaborn,sauliusl/seaborn,JWarmenhoven/seaborn,bsipocz/seaborn,uhjish/seaborn,drewokane/seaborn,lypzln/seaborn,dimarkov/seaborn,arokem/seaborn,phobson/seaborn,nileracecrew/seaborn,Lx37/seaborn,jat255/seaborn,anntzer/seaborn,clarkfitzg/seaborn,huongttlan/seaborn,kyleam/seaborn