removed unsupport methods.
removed unsupport methods.

Git\Commit::setCommitter
Git\Commit::setParent
Git\Commit::setAuthor
Git\Commit::setTree
Git\Commit::setMessage

MagicalTux/php-git,garvins/php-git,MagicalTux/php-git,libgit2/php-git,garvins/php-git,garvins/php-git,libgit2/php-git,MagicalTux/php-git,libgit2/php-git,garvins/php-git