builtin/merge.c: drop a parameter that is never used

diff --git a/cache.h b/cache.h
index 9aa46e70c3faf7eb678eeef7b825ae52fb4bc0bf..ce377e1354a4d0fd719b50edb32124110956467f 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -398,7 +398,6 @@ extern int is_bare_repository(void);
 extern int is_inside_git_dir(void);
 extern char *git_work_tree_cfg;
 extern int is_inside_work_tree(void);
-extern int have_git_dir(void);
 extern const char *get_git_dir(void);
 extern int is_git_directory(const char *path);
 extern char *get_object_directory(void);