Use Core Text defaults for kerning and ligatures

Our ATSUI port did not disable kerning, so we shouldn’t disable it with
Core Text, and ligature are enabled by default anyway.

Change-Id: If3ee5fd14376c7d297c288ba6761a45ce2901a1e

vcl/coretext/ctfonts.cxx

@@ -94,15 +94,6 @@ CTTextStyle::CTTextStyle( const FontSelectPattern& rFSD )
     mpStyleDict = CFDictionaryCreateMutable( NULL, nMaxDictSize,
         &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks );
 
-    // set some default styles: no kerning, regular ligatures
-    static const CGFloat fValZero = 0.0;
-    CFNumberRef pCFFloatNumZero = CFNumberCreate( NULL, kCFNumberFloatType, &fValZero );
-    CFDictionarySetValue( mpStyleDict, kCTKernAttributeName, pCFFloatNumZero );
-    CFRelease( pCFFloatNumZero);
-    static const int nValOne = 1;
-    CFNumberRef pCFIntNumOne = CFNumberCreate( NULL, kCFNumberIntType, &nValOne );
-    CFDictionarySetValue( mpStyleDict, kCTLigatureAttributeName, pCFIntNumOne );
-    CFRelease( pCFIntNumOne);
     CFBooleanRef pCFVertBool = pReqFont->mbVertical ? kCFBooleanTrue : kCFBooleanFalse;
     CFDictionarySetValue( mpStyleDict, kCTVerticalFormsAttributeName, pCFVertBool );