Revert "Plug-in PlatformNetBSD initializer and terminator"

Summary:
This reverts commit 2354cd73101e58540b8b39783df462d06023309f as it
introduced a bunch regressions on the linux bot.

Reviewers: emaste, krytarowski

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D14844

llvm-svn: 253615