Remove option to install when exceeding DSi Menu limit

Apparently this doens't actually cause 'an error has occurred', however I'd still rather not allow that risk as there's not really any reason to and if it somehow did cause the error without Unlaunch that'd be a brick

arm9/src/install.c

@@ -141,7 +141,7 @@ static bool _openMenuSlot()
 		iprintf("\x1B[31m");	//red
 		iprintf("No\n");
 		iprintf("\x1B[47m");	//white
-		return choicePrint("Try installing anyway?");
+		return false;
 	}
 
 	iprintf("\x1B[42m");	//green