Review fixes for armeria-grpc-1.14:javaagent (open-telemetry#17267)

Co-authored-by: otelbot <197425009+otelbot@users.noreply.github.com>

Author: otelbot[bot]

instrumentation/armeria/armeria-grpc-1.14/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/armeria/grpc/v1_14/ArmeriaGrpcTest.java

@@ -95,7 +95,7 @@ void grpcInstrumentation() {
                                 RPC_RESPONSE_STATUS_CODE,
                                 emitStableRpcSemconv() ? Status.Code.OK.name() : null),
                             equalTo(SERVER_ADDRESS, "127.0.0.1"),
-                            equalTo(SERVER_PORT, (long) server.httpPort()))
+                            equalTo(SERVER_PORT, server.httpPort()))
                         .hasEventsSatisfyingExactly(
                             event ->
                                 event