Revert "[turbofan] Fix control reducer bug with NTLs."

This reverts commit aeda76c5cfa9181fff5ed7140e726f96ec883cc3.

Reason: exposed other TurboFan bugs.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/785233003

Cr-Commit-Position: refs/heads/master@{#25730}