Revert the Travis workaround. (#24926)
Revert the Travis workaround. (#24926)

The issue has been fixed.
gijsbotje/bootstrap,stanwmusic/bootstrap,tjkohli/bootstrap,creativewebjp/bootstrap,kvlsrg/bootstrap,coliff/bootstrap,peterblazejewicz/bootstrap,peterblazejewicz/bootstrap,Hemphill/bootstrap-docs,joblocal/bootstrap,SweetProcess/bootstrap,9-chirno/chirno,stanwmusic/bootstrap,seanwu99/bootstrap,yuyokk/bootstrap,bardiharborow/bootstrap,tjkohli/bootstrap,Hemphill/bootstrap-docs,GerHobbelt/bootstrap,joblocal/bootstrap,twbs/bootstrap,Lyricalz/bootstrap,bardiharborow/bootstrap,joblocal/bootstrap,Lyricalz/bootstrap,nice-fungal/bootstrap,tagliala/bootstrap,SweetProcess/bootstrap,yuyokk/bootstrap,vsn4ik/bootstrap,stanwmusic/bootstrap,fschumann1211/bootstrap,fschumann1211/bootstrap,vsn4ik/bootstrap,gijsbotje/bootstrap,Lyricalz/bootstrap,creativewebjp/bootstrap,fschumann1211/bootstrap,yuyokk/bootstrap,peterblazejewicz/bootstrap,zalog/bootstrap,janseliger/bootstrap,9-chirno/chirno,SweetProcess/bootstrap,zalog/bootstrap,vsn4ik/bootstrap,coliff/bootstrap,seanwu99/bootstrap,GerHobbelt/bootstrap,supergibbs/bootstrap,supergibbs/bootstrap,bootstrapbrasil/bootstrap,tagliala/bootstrap,inway/bootstrap,janseliger/bootstrap,yuyokk/bootstrap,bardiharborow/bootstrap,nice-fungal/bootstrap,Lyricalz/bootstrap,inway/bootstrap,bootstrapbrasil/bootstrap,bardiharborow/bootstrap,SweetProcess/bootstrap,creativewebjp/bootstrap,m5o/bootstrap,Hemphill/bootstrap-docs,seanwu99/bootstrap,supergibbs/bootstrap,GerHobbelt/bootstrap,9-chirno/chirno,kvlsrg/bootstrap,9-chirno/chirno,joblocal/bootstrap,twbs/bootstrap,Hemphill/bootstrap-docs,stanwmusic/bootstrap,zalog/bootstrap,gijsbotje/bootstrap,tagliala/bootstrap,kvlsrg/bootstrap,fschumann1211/bootstrap,janseliger/bootstrap,vsn4ik/bootstrap,supergibbs/bootstrap,gijsbotje/bootstrap,janseliger/bootstrap,nice-fungal/bootstrap,creativewebjp/bootstrap,m5o/bootstrap,inway/bootstrap,bootstrapbrasil/bootstrap,seanwu99/bootstrap