Revert "Use signal.alarm() for py2 timeout"
Revert "Use signal.alarm() for py2 timeout"

This reverts commit 900cef639710682c67a4ab88bd9e7666b14a9da2.

nicoddemus/pytest,Akasurde/pytest,pytest-dev/pytest,nicoddemus/pytest,The-Compiler/pytest,tomviner/pytest,ddboline/pytest,RonnyPfannschmidt/pytest,txomon/pytest,tomviner/pytest,markshao/pytest,The-Compiler/pytest,hackebrot/pytest,pfctdayelise/pytest,alfredodeza/pytest