Disable the v1 Manual for now

I really wanted to make a new manual work in time for launch. But no. It would likely be an irresponsible timesink at this stage.

src/k_menu.h

@@ -1132,7 +1132,9 @@ char *M_AddonsHeaderPath(void);
 extern consvar_t cv_dummyaddonsearch;
 extern consvar_t cv_dummyextraspassword;
 
+#ifdef TODONEWMANUAL
 void M_Manual(INT32 choice);
+#endif
 void M_HandleImageDef(INT32 choice);
 
 // K_MENUDRAW.C

src/menus/options-1.c

@@ -31,8 +31,10 @@ menuitem_t OPTIONS_Main[] =
 	{IT_STRING | IT_SUBMENU, "Data Options", "Miscellaneous data options such as the screenshot format.",
 		NULL, {.submenu = &OPTIONS_DataDef}, 0, 0},
 
+#ifdef TODONEWMANUAL
 	{IT_STRING | IT_CALL, "Tricks & Secrets", "Those who bother reading a game manual always get the edge over those who don't!",
 		NULL, {.routine = M_Manual}, 0, 0},
+#endif
 };
 
 // For options menu, the 'extra1' field will determine the background colour to use for... the background! (What a concept!)

src/menus/transient/manual.c

@@ -64,6 +64,7 @@ void M_HandleImageDef(INT32 choice)
 }
 
 // Opening manual
+#ifdef TODONEWMANUAL
 void M_Manual(INT32 choice)
 {
 	(void)choice;
@@ -71,3 +72,4 @@ void M_Manual(INT32 choice)
 	MISC_ManualDef.prevMenu = (choice == INT32_MAX ? NULL : currentMenu);
 	M_SetupNextMenu(&MISC_ManualDef, true);
 }
+#endif