Fix more warnings on linux

Source/platform/text/TextBreakIteratorICU.cpp

Index: Source/platform/text/TextBreakIteratorICU.cpp
diff --git a/Source/platform/text/TextBreakIteratorICU.cpp b/Source/platform/text/TextBreakIteratorICU.cpp
index a6a6564ba1bf673690725f07c98cd5d36142c7d5..d20dd3a71843a473273fa7ca6c0f487b910c2455 100644
--- a/Source/platform/text/TextBreakIteratorICU.cpp
+++ b/Source/platform/text/TextBreakIteratorICU.cpp
@@ -107,17 +107,6 @@ private:
     friend WTF::ThreadSpecific<LineBreakIteratorPool>::operator LineBreakIteratorPool*();
 };
 
-static TextBreakIterator* ensureIterator(bool& createdIterator, TextBreakIterator*& iterator, UBreakIteratorType type)
-{
-    if (!createdIterator) {
-        UErrorCode openStatus = U_ZERO_ERROR;
-        iterator = reinterpret_cast<TextBreakIterator*>(ubrk_open(type, currentTextBreakLocaleID(), 0, 0, &openStatus));
-        createdIterator = true;
-        ASSERT_WITH_MESSAGE(U_SUCCESS(openStatus), "ICU could not open a break iterator: %s (%d)", u_errorName(openStatus), openStatus);
-    }
-    return iterator;
-}
-
 enum TextContext { NoContext, PriorContext, PrimaryContext };
 
 const int textBufferCapacity = 16;