Revert "CHROMIUM: UBUNTU: SAUCE: trace: add trace events for open(), exec() and uselib()"

This reverts commit cd2121d4.

Reverting to see how the performance of the base GKI kernel is without
additional patches. If we end up needing this then we should merge it upstream.

Bug: None
Test: None

Change-Id: I94b5bfe3ed0284ac3be9ba70435c5445febd17fd
Signed-off-by: Richard Fung <richardfung@google.com>