Removed nonexisting plugin causing warnings

- maven-surefire-plugin is the correct artifact id, and it is implicit.

Signed-off-by: David Matějček <david.matejcek@omnifish.ee>

tests/integration/helidon3-client/pom.xml

diff --git a/tests/integration/helidon3-client/pom.xml b/tests/integration/helidon3-client/pom.xml
index 1a4dd08..f4b3ca4 100644
--- a/tests/integration/helidon3-client/pom.xml
+++ b/tests/integration/helidon3-client/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-
+    Copyright 2026 Contributors to the Eclipse Foundation.
     Copyright (c) 2025 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
@@ -77,12 +77,4 @@
             <scope>test</scope>
         </dependency>
     </dependencies>
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.surefire</groupId>
-                <artifactId>surefire</artifactId>
-            </plugin>
-        </plugins>
-    </build>
 </project>