too many useless warnings

[Fourhundred Thecat]

Hello,

when I press key that is not bound, I get following warning in the lower
left corner:

   Key is not bound.  Press '?' for help.

this is actually a helpful warning/notification that tells me what is
going on. Without it, I would be left wondering why my action is not
being executed.

However, when I press PageDown repeatedly, and land at the end of the
page, I get a warning:

   You are on the last page.

In my opinion, this is absolutely useless and superfluous warning.
Unlike the first case, this is just bombarding me with useless
information. I can see the key is working all right, I have just pressed
it one too many times.

Can these things be configured / disabled ?