Remove "auto" option for options.testType since we are no longer using releng machines for now.
Remove "auto" option for options.testType since we are no longer using releng machines for now.

MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz