On logging in to another site where I'm not an administrator, I saw:

While it's obviously good that a normal user can't install plugins, I don't think this message serves any purpose in being shown at all. As a user, I should not need to know what plugins a site should be running. Let's hide the message altogether and remove the associated strings that are currently being shown, and return early from any admin notice functions.
On logging in to another site where I'm not an administrator, I saw:
While it's obviously good that a normal user can't install plugins, I don't think this message serves any purpose in being shown at all. As a user, I should not need to know what plugins a site should be running. Let's hide the message altogether and remove the associated strings that are currently being shown, and return early from any admin notice functions.