[uninit] Use LowerHIL-AI directly
[uninit] Use LowerHIL-AI directly

Summary:
Using debugging on uninit raised an exception. A file was opened twice and closed twice.
This happened because the two abstract interpreters (SIL, LowerHIL) conflicted.
Let's use the LowerHIL-AI directly

Reviewed By: jvillard

Differential Revision: D10126442

fbshipit-source-id: 113c9e131

jvillard/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer,jvillard/infer,jvillard/infer,jvillard/infer,jvillard/infer,facebook/infer,jvillard/infer,jvillard/infer