[gimp] app: remove unused #define in gimpbacktrace-linux.c

[Ell <ell src gnome org>]

commit c4d89bfe0bcd0d16f5e28c77ededd9d15127d499
Author: Ell <ell_se yahoo com>
Date:   Sun Sep 2 14:32:33 2018 -0400

    app: remove unused #define in gimpbacktrace-linux.c

 app/core/gimpbacktrace-linux.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/app/core/gimpbacktrace-linux.c b/app/core/gimpbacktrace-linux.c
index 344a9853c2..ea73b2bde3 100644
--- a/app/core/gimpbacktrace-linux.c
+++ b/app/core/gimpbacktrace-linux.c
@@ -56,7 +56,6 @@
 #define MAX_N_THREADS        256
 #define MAX_N_FRAMES         256
 #define MAX_THREAD_NAME_SIZE 32
-#define MAX_SYMBOL_NAME_SIZE 128
 #define N_SKIPPED_FRAMES     2
 #define MAX_WAIT_TIME        (G_TIME_SPAN_SECOND / 2)
 #define BACKTRACE_SIGNAL     SIGUSR1