Fix conflicting types for 'tfp_printf' (#8269)

* Refactor to use mpaland/printf

* trim firmware size

* remove keymap changes

* run clang format

* Fixup after rebase

* fix up git-submodule command for printf

tmk_core/protocol/chibios/usb_main.h

@@ -87,6 +87,4 @@ void console_flush_output(void);
 
 #endif /* CONSOLE_ENABLE */
 
-void sendchar_pf(void *p, char c);
-
 #endif /* _USB_MAIN_H_ */