Review comments

Author: kannanjgithub

okhttp/src/main/java/io/grpc/okhttp/OkHttpClientTransport.java

@@ -116,7 +116,6 @@
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.TrustManagerFactory;
-import javax.net.ssl.X509ExtendedTrustManager;
 import okio.Buffer;
 import okio.BufferedSink;
 import okio.BufferedSource;