Clean up git_hook style

  - Removing a helper method of dubious value
  - Adding newline for readability
  - Breaking on 80 characters

Change-Id: I02299ade1122d5c53aa3bf866122e0d849cbcf8d
Reviewed-on: https://gerrit.causes.com/22342
Tested-by: Aiden Scandella <aiden@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>