Remove author and committer exercise

_episodes/04-changes.md

@@ -775,57 +775,4 @@ repository (`git commit`):
 > {: .solution}
 {: .challenge}
 
-> ## Author and Committer
->
-> For each of the commits you have done, Git stored your name twice.
-> You are named as the author and as the committer. You can observe
-> that by telling Git to show you more information about your last
-> commits:
->
-> ~~~
-> $ git log --format=full
-> ~~~
-> {: .language-bash}
->
-> When committing you can name someone else as the author:
->
-> ~~~
-> $ git commit --author="Vlad Dracula <vlad@tran.sylvan.ia>"
-> ~~~
-> {: .language-bash}
->
-> Create a new repository and create two commits: one without the
-> `--author` option and one by naming a colleague of yours as the
-> author. Run `git log` and `git log --format=full`. Think about ways
-> how that can allow you to collaborate with your colleagues.
->
-> > ## Solution
-> >
-> > ~~~
-> > $ git add me.txt
-> > $ git commit -m "Update Vlad's bio." --author="Frank N. Stein <franky@monster.com>"
-> > ~~~
-> > {: .language-bash}
-> > ~~~
-> > [master 4162a51] Update Vlad's bio.
-> > Author: Frank N. Stein <franky@monster.com>
-> > 1 file changed, 2 insertions(+), 2 deletions(-)
-> >
-> > $ git log --format=full
-> > commit 4162a51b273ba799a9d395dd70c45d96dba4e2ff
-> > Author: Frank N. Stein <franky@monster.com>
-> > Commit: Vlad Dracula <vlad@tran.sylvan.ia>
-> >
-> > Update Vlad's bio.
-> >
-> > commit aaa3271e5e26f75f11892718e83a3e2743fab8ea
-> > Author: Vlad Dracula <vlad@tran.sylvan.ia>
-> > Commit: Vlad Dracula <vlad@tran.sylvan.ia>
-> >
-> > Vlad's initial bio.
-> > ~~~
-> > {: .output}
-> {: .solution}
-{: .challenge}
-
 [commit-messages]: https://chris.beams.io/posts/git-commit/