Remove runDetached API#95

jakepetroules merged 1 commit intomainswiftlang/swift-subprocess:mainfrom

eng/PR-runDetached-api-eng/PR-windows-pid-reuse-eng/PR-always-monitorswiftlang/swift-subprocess:eng/PR-runDetached-api-eng/PR-windows-pid-reuse-eng/PR-always-monitorCopy head branch name to clipboard