暂时去掉jackson代码，用于展示数据的代码放在客户端比较好些

weixin-java-mp/src/main/java/me/chanjar/weixin/mp/util/json/WxLongTimeJsonSerializer.java

@@ -1,25 +0,0 @@
-package me.chanjar.weixin.mp.util.json;
-
-import java.io.IOException;
-import java.text.Format;
-
-import org.apache.commons.lang3.time.FastDateFormat;
-
-import com.fasterxml.jackson.core.JsonGenerator;
-import com.fasterxml.jackson.databind.JsonSerializer;
-import com.fasterxml.jackson.databind.SerializerProvider;
-
-/**
- * Created by Binary Wang on 2016/7/13.
- */
-public class WxLongTimeJsonSerializer extends JsonSerializer<Long> {
-  private static Format DF = FastDateFormat.getInstance(
-      "yyyy-MM-dd HH:mm:ss");
-
-  @Override
-  public void serialize(Long value, JsonGenerator gen,
-      SerializerProvider serializers)
-      throws IOException {
-    gen.writeString(DF.format(value * 1000));
-  }
-}