Error while Lib

Dear All,

I created a serial.lib file with four functions, and added to new project . in main i called only 2 function which is present in lib file. so its giving me an warning "*** WARNING L16: UNCALLED FUNCTION, IGNORED FOR OVERLAY PROCESS" this is because of other 2 function which is not called in main.

how to clear this warning...

Thanks & regards
Kiran Kumar D