Remove casting

Signed-off-by: Craig Perkins <[email protected]>

Author: cwperks

qa/smoke-test-http/src/test/java/org/opensearch/http/TestExecutionContextPlugin.java

@@ -39,7 +39,7 @@
 
 public class TestExecutionContextPlugin extends Plugin implements ActionPlugin {
 
-    private Client client;
+    private PluginAwareNodeClient client;
 
     @Override
     public Collection<Object> createComponents(
@@ -63,6 +63,6 @@ public Collection<Object> createComponents(
     public List<RestHandler> getRestHandlers(Settings settings, RestController restController, ClusterSettings clusterSettings,
             IndexScopedSettings indexScopedSettings, SettingsFilter settingsFilter, IndexNameExpressionResolver indexNameExpressionResolver,
             Supplier<DiscoveryNodes> nodesInCluster) {
-        return List.of(new TestGetExecutionContextRestAction((PluginAwareNodeClient) client));
+        return List.of(new TestGetExecutionContextRestAction(client));
     }
 }