niconsole-systemlink-image: Remove salt-minion
niconsole-systemlink-image: Remove salt-minion

salt-minion will now be installed outside of the image creation, so remove
salt-minion from the image recipe.

Signed-off-by: Ken Sharp <e6c8ad8f54d15df4645e8aaf3f7a209bc3688570@ni.com>

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt