Remove datetime from version.c to make debug builds reproducible

src/boot/main.c

@@ -312,7 +312,6 @@ void thread3_main(UNUSED void *arg) {
 #ifdef DEBUG
     osSyncPrintf("Super Mario 64\n");
     osSyncPrintf("Built by: %s\n", __username__);
-    osSyncPrintf("Date    : %s\n", __datetime__);
     osSyncPrintf("Compiler: %s\n", __compiler__);
     osSyncPrintf("Linker  : %s\n", __linker__);
 #endif

src/game/version.c

@@ -2,6 +2,5 @@
 #include "src/game/version_data.h"
 
 char __username__[] = __USERNAME__;
-char __datetime__[] = __DATETIME__;
 char __compiler__[] = __COMPILER__;
 char __linker__[]   = __LINKER__;

src/game/version.h

@@ -2,7 +2,6 @@
 #define VER_H
 
 extern char __username__[];
-extern char __datetime__[];
 extern char __compiler__[];
 extern char __linker__[];