Previously there was code that would intentionally crash if more than 7
minutes elapsed, in case the tests got stuck on autobuilders. This code
is more harmful than helpful, see the following table:

  Times it has killed a stuck test on GitLab: . . . . . . . . 0
  Times it has killed a JS_GC_ZEAL test:  . . . . . . . . .  34
  Times it has killed my GDB session because I forgot
    to add the stupid environment variable: . . . . . . . . 478