How to remove printf from c51 code ?

I am using the latest version of the Keil 8051 toolset (AX51, C51, LX51) and want to compile my code without the standard printf.   I do not use it anywhere, yet it is still linked in (I can see in the .m51 file).   My code does use sprintf.  I've spent a bit researching this and haven't seen the answer.

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