Remove stl_util's deletion function use from blimp/.

This fixes memory ownership; the objects in the live_unlocked_chunks_ collection are not BlimpDiscardableMemoryAllocator's to destroy.

BUG=555865

Review-Url: https://codereview.chromium.org/2458543002
Cr-Commit-Position: refs/heads/master@{#427885}
1 file changed