Update ICU to 54.1 step 1

source/tools/toolutil/ucln_tu.c

Index: source/tools/toolutil/ucln_tu.c
diff --git a/source/tools/toolutil/ucln_tu.c b/source/tools/toolutil/ucln_tu.c
deleted file mode 100644
index 5f4450fa9960087062c5ee38e7f34ce266db5cc4..0000000000000000000000000000000000000000
--- a/source/tools/toolutil/ucln_tu.c
+++ /dev/null
@@ -1,17 +0,0 @@
-/********************************************************************
- * COPYRIGHT:
- * Copyright (c) 2007-2013, International Business Machines Corporation and
- * others. All Rights Reserved.
- ********************************************************************/
-
-
-/**  Auto-client **/
-#define UCLN_TYPE UCLN_TOOLUTIL
-#include "ucln_imp.h"
-
-int uprv_dummyFunction_TU(void);
-int uprv_dummyFunction_TU(void)
-{
-  /* this is here to prevent the compiler from complaining about an empty file */
-  return 0;
-}