Update calm-hub/src/test/java/org/finos/calm/store/mongo/TestMongoAdrStoreShould.java

Co-authored-by: jpgough-ms <152306432+jpgough-ms@users.noreply.github.com>

Author: rocketstack-matt

calm-hub/src/test/java/org/finos/calm/store/mongo/TestMongoAdrStoreShould.java

@@ -83,7 +83,6 @@ void setup() {
     void get_adrs_for_namespace_returns_empty_list_when_none_exist() throws NamespaceNotFoundException {
         FindIterable<Document> findIterable = Mockito.mock(DocumentFindIterable.class);
         when(namespaceStore.namespaceExists(anyString())).thenReturn(true);
-        when(namespaceStore.namespaceExists(anyString())).thenReturn(true);
         when(adrCollection.find(eq(Filters.eq("namespace", NAMESPACE))))
                 .thenReturn(findIterable);
         Document documentMock = Mockito.mock(Document.class);