ICU-11866 remove refrences to StringThreadTest (friend lines)

X-SVN-Rev: 37884

diff --git a/icu4c/source/common/unicode/unistr.h b/icu4c/source/common/unicode/unistr.h
index 03fc340da917595176b9d6328d76cbbac85486b5..468edcb7d558a7c7452a9c8885cbf7602576ca96 100644 (file)
--- a/icu4c/source/common/unicode/unistr.h
+++ b/icu4c/source/common/unicode/unistr.h
@@ -34,7 +34,6 @@
 #include "unicode/ucasemap.h"
 
 struct UConverter;          // unicode/ucnv.h
-class  StringThreadTest;
 
 #ifndef U_COMPARE_CODE_POINT_ORDER
 /* see also ustring.h and unorm.h */
@@ -3641,7 +3640,6 @@ private:
     kWritableAlias=0
   };
 
-  friend class StringThreadTest;
   friend class UnicodeStringAppendable;
 
   union StackBufferOrFields;        // forward declaration necessary before friend declaration