No longer refer to the 'yield fixture mechanism' as experimental (doc)
No longer refer to the 'yield fixture mechanism' as experimental (doc)

The feature has been there for a long time and in the 2.7.1 release notes it
says:

> fixed docs to remove the notion that yield-fixtures are experimental.

Therefore this one place was probably just missed.

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