[pom] Remove mockito subclass as not needed

legacy usage.  mockito is doing inline and all tests work so removing that.

Author: hazendaz

pom.xml

@@ -172,12 +172,6 @@
       <version>${mockito.version}</version>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>org.mockito</groupId>
-      <artifactId>mockito-subclass</artifactId>
-      <version>${mockito.version}</version>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-junit-jupiter</artifactId>