[PATCH v2] doc: remove unneeded TODO for release_commit_memory

[Albert Burt <aburthinds@gmail.com>]

Remove TODO that was left in from:
commit 110240588d (Merge branch 'sb/object-store-alloc' - 2018-06-25)

Todo can be removed as:
9d2c97016f (commit.h: delete 'util' field in struct commit - 2018-05-19)
deletes commit->util.

Signed-off-by: Albert Burt <aburthinds@gmail.com>
---

Thanks for looking at this for me Duy. I updated some of the changes you
suggested. 

Let me know if there's anything else that I would need to clean up, or do better.
:)

 commit.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/commit.c b/commit.c
index 2d94e0b199..2ff6dca0bc 100644
--- a/commit.c
+++ b/commit.c
@@ -357,8 +357,6 @@ void release_commit_memory(struct commit *c)
 	c->index = 0;
 	free_commit_buffer(c);
 	free_commit_list(c->parents);
-	/* TODO: what about commit->util? */
-
 	c->object.parsed = 0;
 }
 
-- 
2.17.2 (Apple Git-113)