[nautilus/661-broken-pathbar-w-high-contrast-on-nautilus-3-30] pathbar: Drop unused constant

[António Fernandes <antoniof src gnome org>]

commit 3c901f03d050a85dd7156fd89d5ef41acb106e7e
Author: António Fernandes <antoniof gnome org>
Date:   Tue Mar 27 19:08:38 2018 +0100

    pathbar: Drop unused constant
    
    Unused since commit b1abb52610dbbcac3669347663459e4b00241d57.

 src/nautilus-pathbar.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/src/nautilus-pathbar.c b/src/nautilus-pathbar.c
index 295655f01..78a944279 100644
--- a/src/nautilus-pathbar.c
+++ b/src/nautilus-pathbar.c
@@ -58,7 +58,6 @@ typedef enum
 
 static guint path_bar_signals [LAST_SIGNAL] = { 0 };
 
-#define NAUTILUS_PATH_BAR_ICON_SIZE 16
 #define NAUTILUS_PATH_BAR_BUTTON_MAX_WIDTH 175
 
 typedef struct