Remove plugins_index generation from HOWTORELEASE
Remove plugins_index generation from HOWTORELEASE

alfredodeza/pytest,omarkohl/pytest,vodik/pytest,The-Compiler/pytest,nicoddemus/pytest,Akasurde/pytest,markshao/pytest,RonnyPfannschmidt/pytest,tareqalayan/pytest,The-Compiler/pytest,pfctdayelise/pytest,malinoff/pytest,MengJueM/pytest,ropez/pytest,hpk42/pytest,MengJueM/pytest,tomviner/pytest,davidszotten/pytest,hpk42/pytest,etataurov/pytest,flub/pytest,JonathonSonesen/pytest,eli-b/pytest,tomviner/pytest,rmfitzpatrick/pytest,hackebrot/pytest,lukas-bednar/pytest,skylarjhdownes/pytest,JonathonSonesen/pytest,tgoodlet/pytest,vmalloc/dessert,ropez/pytest,ddboline/pytest,userzimmermann/pytest,userzimmermann/pytest,jaraco/pytest,Bachmann1234/pytest,Bachmann1234/pytest,vodik/pytest,omarkohl/pytest,MichaelAquilina/pytest,pytest-dev/pytest,txomon/pytest,lukas-bednar/pytest,nicoddemus/pytest