git: Remove old hash validation code

This will not work for a signed commit as with the GPG signature being a
part of the commit, the hash is now non-deterministic.

Verification of the commit is done through the validation of the
signature.

Signed-off-by: Chris Marchesi <chrism@vancluevertech.com>

Author: vancluever

worktree_commit_test.go

@@ -140,8 +140,6 @@ func (s *WorktreeSuite) TestRemoveAndCommitAll(c *C) {
 }
 
 func (s *WorktreeSuite) TestCommitSign(c *C) {
-	// expectedHash := plumbing.NewHash("98c4ac7c29c913f7461eae06e024dc18e80d23a4")
-
 	fs := memfs.New()
 	storage := memory.NewStorage()
 
@@ -158,11 +156,8 @@ func (s *WorktreeSuite) TestCommitSign(c *C) {
 
 	key := commitSignKey(c)
 	hash, err := w.Commit("foo\n", &CommitOptions{Author: defaultSignature(), SignKey: key})
-	// c.Assert(hash, Equals, expectedHash)
 	c.Assert(err, IsNil)
 
-	// assertStorageStatus(c, r, 1, 1, 1, expectedHash)
-
 	// Verify the commit.
 	pks := new(bytes.Buffer)
 	pkw, err := armor.Encode(pks, openpgp.PublicKeyType, nil)