fix duplicate dependency

Signed-off-by: Attila Mészáros <[email protected]>

Author: csviri

flink-kubernetes-operator-api/pom.xml

@@ -125,14 +125,7 @@ under the License.
             <version>${flink.version}</version>
             <scope>test</scope>
         </dependency>
-
-        <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
-        </dependency>
-
+        
         <dependency>
             <groupId>org.apache.flink</groupId>
             <artifactId>flink-runtime</artifactId>