Revert "Make the JIT the default in ART."

Few tests failing: oat_file_assistant_test and jit run tests.

This reverts commit 0a9b6826bc6e71d799eb3fe8829981597b890dee.

Change-Id: Ibbf73c191d244ebb9517b6ae97971dd9a9d37d7c
4 files changed