docs: Drop duplicate openstack key pair creation step
It's already in the "Get OpenStack credentials and test it" section
documented how to create a key pair.
@@ -62,11 +62,6 @@ Get OpenStack credentials and test it
Usage
-----
-* Create a passwordless ssh public key::
-
- $ openstack keypair create myself > myself.pem
- $ chmod 600 myself.pem
-
* Run the dummy suite. It does nothing useful but shows all works as
expected. Note that the first time it is run, it can take a long
time (from a few minutes to half an hour or so) because it downloads
