[tools] Removed git_diff.
[tools] Removed git_diff.

- Removed because the diff became out of date when the changes
  were commited.

ahamilton/vigil,ahamilton/vigil,ahamilton/vigil,ahamilton/vigil,ahamilton/vigil,ahamilton/vigil,ahamilton/vigil,ahamilton/vigil,ahamilton/vigil