tweaks: remove five dummy function definitions from the tiny version

src/global.c

@@ -277,6 +277,7 @@ void goto_dir_void(void)
 {
 }
 #endif
+#ifndef NANO_TINY
 void dos_format_void(void)
 {
 }
@@ -292,6 +293,7 @@ void prepend_void(void)
 void backup_file_void(void)
 {
 }
+#endif
 void discard_buffer(void)
 {
 }

src/proto.h

@@ -683,17 +683,19 @@ void disable_nodelay(void);
 void do_credits(void);
 #endif
 
-/* May as well throw these here, since they are just placeholders. */
+/* These are just name definitions. */
 void do_cancel(void);
 void case_sens_void(void);
 void regexp_void(void);
 void gototext_void(void);
 void to_files_void(void);
+#ifndef NANO_TINY
 void dos_format_void(void);
 void mac_format_void(void);
 void append_void(void);
 void prepend_void(void);
 void backup_file_void(void);
+#endif
 void discard_buffer(void);
 void new_buffer_void(void);
 void backwards_void(void);