There's no point in trying to extract the type hints from the
fullcodegen CompareICs, BinaryOpICs and ToBooleanICs if the
feedback is not consumed (which is guarded by the flag).

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2048543002
Cr-Commit-Position: refs/heads/master@{#36768}