tar: remove unused function dir_removed_diag

* src/common.h (dir_removed_diag): Remove unused decl.
* src/misc.c (dir_removed_diag): Remove unused function.

src/common.h

@@ -632,8 +632,6 @@ void seek_diag_details (char const *name, off_t offset);
 void stat_diag (char const *name);
 void file_removed_diag (const char *name, bool top_level,
 			void (*diagfn) (char const *name));
-void dir_removed_diag (char const *name, bool top_level,
-		       void (*diagfn) (char const *name));
 void write_error_details (char const *name, size_t status, size_t size);
 void write_fatal (char const *name) __attribute__ ((noreturn));
 void write_fatal_details (char const *name, ssize_t status, size_t size)

src/misc.c

@@ -856,21 +856,6 @@ file_removed_diag (const char *name, bool top_level,
     diagfn (name);
 }
 
-void
-dir_removed_diag (const char *name, bool top_level,
-		   void (*diagfn) (char const *name))
-{
-  if (!top_level && errno == ENOENT)
-    {
-      WARNOPT (WARN_FILE_REMOVED,
-	       (0, 0, _("%s: Directory removed before we read it"),
-		quotearg_colon (name)));
-      set_exit_status (TAREXIT_DIFFERS);
-    }
-  else
-    diagfn (name);
-}
-
 void
 write_fatal_details (char const *name, ssize_t status, size_t size)
 {