Merge pull request #2310 from ClickHouse/minor_cleanup

[client-v2] Removed unused class and imports

Author: chernser

client-v2/src/main/java/com/clickhouse/client/api/internal/HttpAPIClientHelper.java

@@ -58,11 +58,8 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import javax.net.ssl.KeyManager;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLException;
-import javax.net.ssl.TrustManager;
-import javax.net.ssl.X509TrustManager;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -77,10 +74,7 @@
 import java.net.URL;
 import java.net.UnknownHostException;
 import java.nio.charset.StandardCharsets;
-import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
-import java.security.SecureRandom;
-import java.security.cert.X509Certificate;
 import java.util.Base64;
 import java.util.Collection;
 import java.util.Collections;
@@ -834,22 +828,4 @@ public long getTime() {
             return count > 0 ? runningAverage / count : 0;
         }
     }
-
-    private static final class TrustAllManager implements X509TrustManager {
-
-        @Override
-        public void checkClientTrusted(X509Certificate[] chain, String authType) {
-            // ignore
-        }
-
-        @Override
-        public void checkServerTrusted(X509Certificate[] chain, String authType) {
-            // ignore
-        }
-
-        @Override
-        public X509Certificate[] getAcceptedIssuers() {
-            return new X509Certificate[0];
-        }
-    }
 }