Exclude unnecessary old Node.js combos from Travis CI build matrix; fixes #18224
Exclude unnecessary old Node.js combos from Travis CI build matrix; fixes #18224

bardiharborow/bootstrap,zalog/bootstrap,9-chirno/chirno,vitaligent/4,tagliala/bootstrap,NCARB/bootstrap,copperdesign/bootstrap,Hemphill/bootstrap-docs,frostbitten/bootstrap,supergibbs/bootstrap,david-schopf/bootstrap,yuyokk/bootstrap,tomlutzenberger/bootstrap,igoynawamreh/bootstrap,lipis/bootstrap,vsn4ik/bootstrap,supergibbs/bootstrap,jipexu/bootstrap,igoynawamreh/bootstrap,copperdesign/bootstrap,kvlsrg/bootstrap,wesamco/bootstrap-rtl,JumpLinkNetwork/bootstrap-backward,andresgalante/bootstrap,creativewebjp/bootstrap,igoynawamreh/bootstrap,NCARB/bootstrap,Hemphill/bootstrap-docs,kvlsrg/bootstrap,edanbarak/bootstrap,tagliala/bootstrap,frostbitten/bootstrap,TheFridayInstitute/bootstrap,janseliger/bootstrap,urbit/bootstrap,johnajacob/bootstrap,hebbet/bootstrap,mpharrigan/bootstrap,Hightrack/bootstrap,tibo66/bootstrap,davethegr8/bootstrap,afuno/bootstrap,NCARB/bootstrap,Scoutski/bootstrap,peterblazejewicz/bootstrap,SweetProcess/bootstrap,zalog/bootstrap,bootstrapbrasil/bootstrap,hebbet/bootstrap,tagliala/bootstrap,joblocal/bootstrap,hebbet/bootstrap,david-schopf/bootstrap,hellonewman81/bs4,seanwu99/bootstrap,bardiharborow/bootstrap,creativewebjp/bootstrap,abvalentine/bootstrap,SweetProcess/bootstrap,gijsbotje/bootstrap,vitaligent/4,wesamco/bootstrap-rtl,lipis/bootstrap,xt0rted/bootstrap,creativewebjp/bootstrap,tibo66/bootstrap,slavanga/bootstrap,tomlutzenberger/bootstrap,peterblazejewicz/bootstrap,vitaligent/4,vsn4ik/bootstrap,sealocal/bootstrap,TheFridayInstitute/bootstrap,stanwmusic/bootstrap,nice-fungal/bootstrap,sealocal/bootstrap,yuyokk/bootstrap,IdanCo/bootstrap,supergibbs/bootstrap,copperdesign/bootstrap,frostbitten/bootstrap,JumpLinkNetwork/bootstrap-backward,tomlutzenberger/bootstrap,hebbet/bootstrap,Scoutski/bootstrap,joblocal/bootstrap,zalog/bootstrap,9-chirno/chirno,mpharrigan/bootstrap,bardiharborow/bootstrap,Lyricalz/bootstrap,stanwmusic/bootstrap,onenameio/rhythm-bootstrap,gijsbotje/bootstrap,jipexu/bootstrap,igoynawamreh/bootstrap,9-chirno/chirno,n054/bootstrap,lipis/bootstrap,Hightrack/bootstrap,n054/bootstrap,gijsbotje/bootstrap,GerHobbelt/bootstrap,janseliger/bootstrap,creativewebjp/bootstrap,tibo66/bootstrap,jipexu/bootstrap,tjkohli/bootstrap,Lyricalz/bootstrap,Hemphill/bootstrap-docs,hellonewman81/bs4,frostbitten/bootstrap,Delagen/bootstrap,realcrowd/bootstrap,JumpLinkNetwork/bootstrap-backward,andresgalante/bootstrap,fschumann1211/bootstrap,edanbarak/bootstrap,johnajacob/bootstrap,xt0rted/bootstrap,urbit/bootstrap,jipexu/bootstrap,9-chirno/chirno,urbit/bootstrap,tjkohli/bootstrap,Delagen/bootstrap,tibo66/bootstrap,Lyricalz/bootstrap,fschumann1211/bootstrap,johnajacob/bootstrap,afuno/bootstrap,vsn4ik/bootstrap,realcrowd/bootstrap,GerHobbelt/bootstrap,slavanga/bootstrap,janseliger/bootstrap,seanwu99/bootstrap,Delagen/bootstrap,stanwmusic/bootstrap,IdanCo/bootstrap,davethegr8/bootstrap,blockstack/blockstack-bootstrap,Delagen/bootstrap,peterblazejewicz/bootstrap,mpharrigan/bootstrap,fschumann1211/bootstrap,inway/bootstrap,yuyokk/bootstrap,copperdesign/bootstrap,bootstrapbrasil/bootstrap,blockstack/blockstack-bootstrap,SweetProcess/bootstrap,onenameio/rhythm-bootstrap,afuno/bootstrap,abvalentine/bootstrap,kvlsrg/bootstrap,Scoutski/bootstrap,n054/bootstrap,TheFridayInstitute/bootstrap,sealocal/bootstrap,realcrowd/bootstrap,IdanCo/bootstrap,hellonewman81/bs4,n054/bootstrap,m5o/bootstrap,twbs/bootstrap,nice-fungal/bootstrap,abvalentine/bootstrap,lemuelbarango/bootstrap,abvalentine/bootstrap,edanbarak/bootstrap,inway/bootstrap,janseliger/bootstrap,vsn4ik/bootstrap,TheFridayInstitute/bootstrap,JumpLinkNetwork/bootstrap-backward,yuyokk/bootstrap,realcrowd/bootstrap,SweetProcess/bootstrap,bardiharborow/bootstrap,supergibbs/bootstrap,lemuelbarango/bootstrap,slavanga/bootstrap,NCARB/bootstrap,sealocal/bootstrap,andresgalante/bootstrap,wesamco/bootstrap-rtl,coliff/bootstrap,Scoutski/bootstrap,xt0rted/bootstrap,fschumann1211/bootstrap,afuno/bootstrap,stanwmusic/bootstrap,davethegr8/bootstrap,xt0rted/bootstrap,wesamco/bootstrap-rtl,johnajacob/bootstrap,Lyricalz/bootstrap,inway/bootstrap,seanwu99/bootstrap,GerHobbelt/bootstrap,bootstrapbrasil/bootstrap,joblocal/bootstrap,slavanga/bootstrap,coliff/bootstrap,seanwu99/bootstrap,Hightrack/bootstrap,lemuelbarango/bootstrap,lipis/bootstrap,edanbarak/bootstrap,IdanCo/bootstrap,gijsbotje/bootstrap,david-schopf/bootstrap,m5o/bootstrap,blockstack/blockstack-bootstrap,twbs/bootstrap,Hemphill/bootstrap-docs,nice-fungal/bootstrap,andresgalante/bootstrap,lemuelbarango/bootstrap,onenameio/rhythm-bootstrap,joblocal/bootstrap,davethegr8/bootstrap