RFR: SKARA-5 Remove pipeline support from process

[Jeyvison Nascimento via github.com]

Hey Folks :) Is that what you meant with removing pipeline support? If it's not, let me know. Also, I think something must be changed in ProcessBuilder, am i right? And this PR has a test problem i'm not able to fix but if any of you give me some directions i can fix it and resend :)

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Commits:
 - cf6700bd:	SKARA-5 Remove pipeline support from process

Pull request:
https://github.com/openjdk/skara/pull/2

Webrev:
https://openjdk.github.io/cr/skara/2/webrev.00

Patch:
https://github.com/openjdk/skara/pull/2.diff

Fetch command:
git fetch https://github.com/openjdk/skara.git cf6700bd:pr/2