remove automatic tox-testing of py25
remove automatic tox-testing of py25

bubenkoff/pytest,nicoddemus/pytest,omarkohl/pytest,userzimmermann/pytest,userzimmermann/pytest,davidszotten/pytest,inirudebwoy/pytest,alfredodeza/pytest,ericdill/pytest,oleg-alexandrov/pytest,RonnyPfannschmidt/pytest,codewarrior0/pytest,ddboline/pytest,chillbear/pytest,gabrielcnr/pytest,mhils/pytest,ropez/pytest,bukzor/pytest,pelme/pytest,chillbear/pytest,ionelmc/pytest,codewarrior0/pytest,MengJueM/pytest,takluyver/pytest,rouge8/pytest,ropez/pytest,MengJueM/pytest,hackebrot/pytest,vodik/pytest,tomviner/pytest,JonathonSonesen/pytest,doordash/pytest,untitaker/pytest,nicoddemus/repo-test,nicoddemus/pytest,malinoff/pytest,Bachmann1234/pytest,mbirtwell/pytest,ericdill/pytest,MichaelAquilina/pytest,pytest-dev/pytest,tgoodlet/pytest,hunse/pytest,pfctdayelise/pytest,mdboom/pytest,mdboom/pytest,flub/pytest,eli-b/pytest,hpk42/pytest,ojake/pytest,rmfitzpatrick/pytest,Bjwebb/pytest,wfxiang08/pytest,Carreau/pytest,etataurov/pytest,vmalloc/dessert,skylarjhdownes/pytest,doordash/pytest,omarkohl/pytest,chiller/pytest,ghostsquad/pytest,hpk42/pytest,jb098/pytest,chiller/pytest,abusalimov/pytest,JonathonSonesen/pytest,lukas-bednar/pytest,abusalimov/pytest,mhils/pytest,inirudebwoy/pytest,gabrielcnr/pytest,ghostsquad/pytest,tomviner/pytest,nicoddemus/repo-test,jaraco/pytest,markshao/pytest,lukas-bednar/pytest,Haibo-Wang-ORG/pytest,ionelmc/pytest,Akasurde/pytest,takluyver/pytest,untitaker/pytest,tareqalayan/pytest,pelme/pytest,Carreau/pytest,mbirtwell/pytest,vodik/pytest,bukzor/pytest,txomon/pytest,Bachmann1234/pytest,The-Compiler/pytest,bubenkoff/pytest,hunse/pytest,Haibo-Wang-ORG/pytest,The-Compiler/pytest,wfxiang08/pytest,icemac/pytest,oleg-alexandrov/pytest,rouge8/pytest,jb098/pytest,Bjwebb/pytest,ojake/pytest,icemac/pytest