Remove hardcoded kafka-clients from spring-kafka-3.x scenario (same fix as 2.3.x)

Author: wu-sheng

test/plugin/scenarios/spring-kafka-3.x-scenario/pom.xml

@@ -55,17 +55,7 @@
                 </exclusion>
             </exclusions>
         </dependency>
-        <dependency>
-            <groupId>org.apache.kafka</groupId>
-            <artifactId>kafka-clients</artifactId>
-            <version>${kafka-version}</version>
-            <exclusions>
-                <exclusion>
-                    <artifactId>slf4j-api</artifactId>
-                    <groupId>*</groupId>
-                </exclusion>
-            </exclusions>
-        </dependency>
+        <!-- Let spring-kafka pull the matching kafka-clients version transitively -->
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>
             <artifactId>okhttp</artifactId>