Update to ICU 58rc step 1

source/common/ucmndata.h

Index: source/common/ucmndata.h
diff --git a/source/common/ucmndata.h b/source/common/ucmndata.h
index 413a2f8819ccabe464dffe85c3d2130037da3074..9e87fad9bdcb02c260d79509edb2877b3e150367 100644
--- a/source/common/ucmndata.h
+++ b/source/common/ucmndata.h
@@ -1,3 +1,5 @@
+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*
 ******************************************************************************
 *
@@ -44,20 +46,6 @@ typedef struct  {
 } DataHeader;
 
 typedef struct {
-    DataHeader hdr;
-    char padding[8];
-    uint32_t count, reserved;
-    /*
-    const struct {
-    const char *const name;
-    const void *const data;
-    } toc[1];
-    */
-   int   fakeNameAndData[4];       /* TODO:  Change this header type from */
-                                   /*        pointerTOC to OffsetTOC.     */
-} ICU_Data_Header;
-
-typedef struct {
     uint32_t nameOffset;
     uint32_t dataOffset;
 } UDataOffsetTOCEntry;