How much would that lighten the kernel load, and potentially speed it up, doing a simple delete of all 32-bit code?
Given that 32bit has a hard limit of 4GB of RAM, it can't run anything that requires more than a terminal shell to run and none of the security protections like memory address randomization.
Copy and send the 32bit code to someone for archive and historical purposes, then do a Select All and push delete, erase the code fron the kernel file.