Most of the unused text mentioned on
https://tcrf.net/Pokémon_Red_and_Blue/Unused_Text is in this code, some of it has some references that were commented out but not all, eg. looks like there was code that would use the "Switch on!" text when you used the endgame PC, can you believe it?
Here's some cut code from the battle script, act_chief is for the Silph Chief battle while act_okido might be the Prof Oak battle. No idea what this actually does, maybe someone should try restoring it to pret.
The mssccprj.scc file is from VSS btw, basically MS's ancient version of git. Knowing wack0 I'd hope he would have dumped the whole database so he'd have every single change made to it, but then again they might not have been using VSS very long.