David:
I think you would be asking for trouble. The Keil library code is designed to run from the common bank. I would not move it. You should look carefully as to why this is being linked in and see if you can replace the invoking code (and libary path to that code) with code you write which would most likely be a bit smaller.

One way to find out the culprit routine would be to make quick temporary builds of sliced down versions of your program.

Michael Karas