remove ChannelArguments ref and update doc
diff --git a/examples/cpp/cpptutorial.md b/examples/cpp/cpptutorial.md
index a23633d..c06233a 100644
--- a/examples/cpp/cpptutorial.md
+++ b/examples/cpp/cpptutorial.md
@@ -242,10 +242,10 @@
To call service methods, we first need to create a *stub*.
-First we need to create a gRPC *channel* for our stub, specifying the server address and port we want to connect to and any special channel arguments - in our case we'll use the default `ChannelArguments` and no SSL:
+First we need to create a gRPC *channel* for our stub, specifying the server address and port we want to connect to without SSL:
```cpp
-grpc::CreateChannel("localhost:50051", grpc::InsecureCredentials(), ChannelArguments());
+grpc::CreateChannel("localhost:50051", grpc::InsecureCredentials());
```
Now we can use the channel to create our stub using the `NewStub` method provided in the `RouteGuide` class we generated from our .proto.
diff --git a/examples/cpp/helloworld/README.md b/examples/cpp/helloworld/README.md
index ac833e9..b16c084 100644
--- a/examples/cpp/helloworld/README.md
+++ b/examples/cpp/helloworld/README.md
@@ -94,7 +94,7 @@
arguments as follows
```
- auto channel = CreateChannel("localhost:50051", InsecureCredentials(), ChannelArguments());
+ auto channel = CreateChannel("localhost:50051", InsecureCredentials());
```
- Create a stub. A stub implements the rpc methods of a service and in the
diff --git a/examples/cpp/helloworld/greeter_async_client.cc b/examples/cpp/helloworld/greeter_async_client.cc
index bc95c54..875599e 100644
--- a/examples/cpp/helloworld/greeter_async_client.cc
+++ b/examples/cpp/helloworld/greeter_async_client.cc
@@ -45,7 +45,6 @@
#include "helloworld.grpc.pb.h"
using grpc::Channel;
-using grpc::ChannelArguments;
using grpc::ClientAsyncResponseReader;
using grpc::ClientContext;
using grpc::CompletionQueue;
diff --git a/examples/cpp/helloworld/greeter_client.cc b/examples/cpp/helloworld/greeter_client.cc
index 2b542cd..3d2fcba 100644
--- a/examples/cpp/helloworld/greeter_client.cc
+++ b/examples/cpp/helloworld/greeter_client.cc
@@ -43,7 +43,6 @@
#include "helloworld.grpc.pb.h"
using grpc::Channel;
-using grpc::ChannelArguments;
using grpc::ClientContext;
using grpc::Status;
using helloworld::HelloRequest;
diff --git a/examples/cpp/route_guide/route_guide_client.cc b/examples/cpp/route_guide/route_guide_client.cc
index fe99807..ec0a75e 100644
--- a/examples/cpp/route_guide/route_guide_client.cc
+++ b/examples/cpp/route_guide/route_guide_client.cc
@@ -47,7 +47,6 @@
#include "route_guide.grpc.pb.h"
using grpc::Channel;
-using grpc::ChannelArguments;
using grpc::ClientContext;
using grpc::ClientReader;
using grpc::ClientReaderWriter;