Remove redundant helper function as all clients pass locale

src/ports/SkFontConfigInterface_android.cpp

Index: src/ports/SkFontConfigInterface_android.cpp
diff --git a/src/ports/SkFontConfigInterface_android.cpp b/src/ports/SkFontConfigInterface_android.cpp
index 3f169e137a136733215f29ac82b4d52cd14cb71c..faf995b304c68496777c0d600f8d01c17ac690da 100644
--- a/src/ports/SkFontConfigInterface_android.cpp
+++ b/src/ports/SkFontConfigInterface_android.cpp
@@ -738,11 +738,6 @@ SkTypeface* SkFontConfigInterfaceAndroid::getTypefaceForGlyphID(uint16_t glyphID
 
 ///////////////////////////////////////////////////////////////////////////////
 
-bool SkGetFallbackFamilyNameForChar(SkUnichar uni, SkString* name) {
-    SkFontConfigInterfaceAndroid* fontConfig = getSingletonInterface();
-    return fontConfig->getFallbackFamilyNameForChar(uni, NULL, name);
-}
-
 bool SkGetFallbackFamilyNameForChar(SkUnichar uni, const char* lang, SkString* name) {
     SkFontConfigInterfaceAndroid* fontConfig = getSingletonInterface();
     return fontConfig->getFallbackFamilyNameForChar(uni, lang, name);