Twine: Use raw_ostream::write_hex, remove unused itohexstr method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77617 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/ADT/TwineTest.cpp b/unittests/ADT/TwineTest.cpp
index 9a31901..61e8a0a 100644
--- a/unittests/ADT/TwineTest.cpp
+++ b/unittests/ADT/TwineTest.cpp
@@ -39,8 +39,7 @@
   EXPECT_EQ("123", Twine((char) 123).str());
   EXPECT_EQ("-123", Twine((signed char) -123).str());
 
-  EXPECT_EQ("7B", Twine::utohexstr(123).str());
-  EXPECT_EQ("FFFFFFFFFFFFFF85", Twine::itohexstr(-123).str());
+  EXPECT_EQ("7b", Twine::utohexstr(123).str());
 }
 
 TEST(TwineTest, Concat) {