fix inconsistency between README and overview.md

docs/cn/overview.md

@@ -49,7 +49,6 @@ RPC不是万能的抽象，否则我们也不需要TCP/IP这一层了。但是
   * 支持[rdma](https://en.wikipedia.org/wiki/Remote_direct_memory_access)(即将开源)
   * 支持[thrift](thrift.md) , 线程安全，比官方client更方便
   * 各种百度内使用的协议: [baidu_std](baidu_std.md), [streaming_rpc](streaming_rpc.md), hulu_pbrpc, [sofa_pbrpc](https://github.com/baidu/sofa-pbrpc), nova_pbrpc, public_pbrpc, ubrpc和使用nshead的各种协议.
-  * 从其他语言通过HTTP+json访问基于protobuf的协议.
   * 基于工业级的[RAFT算法](https://raft.github.io)实现搭建[高可用](https://en.wikipedia.org/wiki/High_availability)分布式系统，已在[braft](https://github.com/brpc/braft)开源。
 * Server能[同步](server.md)或[异步](server.md#异步service)处理请求。
 * Client支持[同步](client.md#同步访问)、[异步](client.md#异步访问)、[半同步](client.md#半同步)，或使用[组合channels](combo_channel.md)简化复杂的分库或并发访问。

docs/en/overview.md

@@ -45,7 +45,6 @@ You can use it to:
   * [rdma](https://en.wikipedia.org/wiki/Remote_direct_memory_access) support (will be opensourced)
   * [thrift](thrift.md) support,  thread-safe, more friendly and performant than the official clients.
   * all sorts of protocols used in Baidu: [baidu_std](../cn/baidu_std.md), [streaming_rpc](streaming_rpc.md), hulu_pbrpc, [sofa_pbrpc](https://github.com/baidu/sofa-pbrpc), nova_pbrpc, public_pbrpc, ubrpc, and nshead-based ones.
-  * Access protobuf-based protocols with HTTP+json, probably from another language.
   * Build [HA](https://en.wikipedia.org/wiki/High_availability) distributed services using an industrial-grade implementation of [RAFT consensus algorithm](https://raft.github.io) which is opensourced at [braft](https://github.com/brpc/braft)
 * Servers can handle requests [synchronously](server.md) or [asynchronously](server.md#asynchronous-service).
 * Clients can access servers [synchronously](client.md#synchronus-call), [asynchronously](client.md#asynchronous-call), [semi-synchronously](client.md#semi-synchronous-call), or use [combo channels](combo_channel.md) to simplify sharded or parallel accesses declaratively.