Remove a bunch of OS(MACOSX) code

sky/engine/wtf/unicode/icu/CollatorICU.cpp

Index: sky/engine/wtf/unicode/icu/CollatorICU.cpp
diff --git a/sky/engine/wtf/unicode/icu/CollatorICU.cpp b/sky/engine/wtf/unicode/icu/CollatorICU.cpp
index a21e9325a5add6c86844373e4bb8b07ca1e06ffb..c667a639b32d633ee71975c7192cefc0676dad8e 100644
--- a/sky/engine/wtf/unicode/icu/CollatorICU.cpp
+++ b/sky/engine/wtf/unicode/icu/CollatorICU.cpp
@@ -37,11 +37,6 @@
 #include <string.h>
 #include <unicode/ucol.h>
 
-#if OS(MACOSX)
-#include "wtf/RetainPtr.h"
-#include <CoreFoundation/CoreFoundation.h>
-#endif
-
 namespace WTF {
 
 static UCollator* cachedCollator;
@@ -60,18 +55,7 @@ Collator::Collator(const char* locale)
 
 PassOwnPtr<Collator> Collator::userDefault()
 {
-#if OS(MACOSX) && USE(CF)
-    // Mac OS X doesn't set UNIX locale to match user-selected one, so ICU default doesn't work.
-    RetainPtr<CFLocaleRef> currentLocale(AdoptCF, CFLocaleCopyCurrent());
-    CFStringRef collationOrder = (CFStringRef)CFLocaleGetValue(currentLocale.get(), kCFLocaleCollatorIdentifier);
-    char buf[256];
-    if (!collationOrder)
-        return adoptPtr(new Collator(""));
-    CFStringGetCString(collationOrder, buf, sizeof(buf), kCFStringEncodingASCII);
-    return adoptPtr(new Collator(buf));
-#else
     return adoptPtr(new Collator(0));
-#endif
 }
 
 Collator::~Collator()