[goobox] removed unused strings

[Paolo Bacchilega <paobac src gnome org>]

commit c06de61d74e9d1a2911a1a69bcc44b52854078dc
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sat Jan 12 13:49:04 2019 +0100

    removed unused strings

 src/goo-window.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/goo-window.c b/src/goo-window.c
index 07e8d71..f71229d 100644
--- a/src/goo-window.c
+++ b/src/goo-window.c
@@ -43,8 +43,6 @@
 #include "typedefs.h"
 
 #define FILES_TO_PROCESS_AT_ONCE 500
-#define HIDE_TRACK_LIST N_("Hide _tracks")
-#define SHOW_TRACK_LIST N_("Show _tracks")
 #define PLAYER_CHECK_RATE 100
 #define COVER_SIZE 80
 #define IDLE_TIMEOUT 200