chapter 11: Getting our image onto the server: remove comment

This commit removes a comment.

26ea97a added a comment about an
error I encountered when I executed the `ansible-playbook ...` command
in section 'Getting our image onto the server'.

Xronophobe was able to reproduce the error only when the user
 - `pip install ansible` and
 - does not `pip install docker`

That is what I did. In the current version of the book at
[online](https://www.obeythetestinggoat.com/book/chapter_11_ansible.html#_installing_ansible)
I saw only the requirement to install ansible.
I failed to look at the current version of the code in the
[repository](https://github.com/hjwp/Book-TDD-Web-Dev-Python/blob/main/chapter_11_ansible.asciidoc?plain=1#L320-L322)
and see the additional requirement to install the docker python
package.

So, this commit removes that comment. Other users will not encounter
the error I did because they will both:
- pip install ansible, and
- pip install docker

Author: zipperer

chapter_11_ansible.asciidoc

@@ -690,13 +690,6 @@ false, "AttachStdout": true, "Cmd": ["gunicorn", "--bind", ":8888",
 // check their user has permission.
 // DAVID: by the way it's getting annoying having to type my sudo password in all the time.
 
-// ZIPPERER: I got error
-// TASK [Export container image locally]
-// ... ModuleNotFoundError: No module named 'requests'
-// "Failed to import the required Python library (requests) on <local hostname>'s Python ../.venv/bin/python3.
-//
-// No error after I installed library `requests` in venv (i.e. `python3 -m pip install requests`) and reran the `ansible-playbook` command.
-
 For completeness, let's also add a step to explicitly build the image locally.
 This means we don't have a dependency on having run `docker build` locally.