Remove Mockito from pom.xml as it's not used at this point

Author: nuzayats

app/pom.xml

@@ -553,13 +553,6 @@ limitations under the License.
             <scope>test</scope>
         </dependency>
 
-        <dependency>
-            <groupId>org.mockito</groupId>
-            <artifactId>mockito-junit-jupiter</artifactId>
-            <version>3.7.7</version>
-            <scope>test</scope>
-        </dependency>
-
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>