Remove unnecessary method override

Author: cowtowncoder

yaml/src/main/java/com/fasterxml/jackson/dataformat/yaml/YAMLGenerator.java

@@ -455,17 +455,6 @@ public void writeFieldId(long id) throws IOException {
         _writeScalar(idStr, "int", STYLE_SCALAR);
     }
 
-    @Override
-    public final void writeStringField(String fieldName, String value)
-        throws IOException
-    {
-        if (_writeContext.writeFieldName(fieldName) == JsonWriteContext.STATUS_EXPECT_VALUE) {
-            _reportError("Can not write a field name, expecting a value");
-        }
-        _writeFieldName(fieldName);
-        writeString(value);
-    }
-
     private final void _writeFieldName(String name) throws IOException
     {
         _writeScalar(name, "string",