Clean up unused methods and imports in Ratpack 1.4 tests

Author: trask

instrumentation/ratpack/ratpack-1.4/testing/src/main/java/io/opentelemetry/instrumentation/ratpack/client/AbstractRatpackHttpClientTest.java

@@ -4,24 +4,20 @@
 import static io.opentelemetry.semconv.ServerAttributes.SERVER_ADDRESS;
 import static io.opentelemetry.semconv.ServerAttributes.SERVER_PORT;
 
-import io.netty.channel.ConnectTimeoutException;
 import io.netty.handler.codec.PrematureChannelClosureException;
 import io.netty.handler.timeout.ReadTimeoutException;
 import io.opentelemetry.api.common.AttributeKey;
 import io.opentelemetry.instrumentation.testing.junit.http.AbstractHttpClientTest;
 import io.opentelemetry.instrumentation.testing.junit.http.HttpClientResult;
 import io.opentelemetry.instrumentation.testing.junit.http.HttpClientTestOptions;
 import java.net.URI;
-import java.nio.channels.ClosedChannelException;
 import java.time.Duration;
 import java.util.Collections;
 import java.util.HashSet;
-import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.condition.OS;
 import ratpack.exec.Operation;
 import ratpack.exec.Promise;
 import ratpack.func.Action;
@@ -193,19 +189,4 @@ private static String nettyExpectedClientSpanNameMapper(URI uri, String method)
     }
     return HttpClientTestOptions.DEFAULT_EXPECTED_CLIENT_SPAN_NAME_MAPPER.apply(uri, method);
   }
-
-  private static boolean isWindows() {
-    return System.getProperty("os.name").toLowerCase(Locale.ROOT).contains("win");
-  }
-
-  private static Throwable unwrapConnectionException(Throwable exception) {
-    if (exception == null) {
-      return null;
-    }
-    Throwable current = exception;
-    while (current.getCause() != null && current.getCause() != current) {
-      current = current.getCause();
-    }
-    return current;
-  }
 }