fix: remove duplicate endpoint call in AuditToolCallTest

Author: saurabhjain1592

src/test/java/com/getaxonflow/sdk/AuditToolCallTest.java

@@ -44,7 +44,6 @@ class AuditToolCallTest {
     @BeforeEach
     void setUp(WireMockRuntimeInfo wmRuntimeInfo) {
         axonflow = AxonFlow.create(AxonFlowConfig.builder()
-            .endpoint(wmRuntimeInfo.getHttpBaseUrl())
             .endpoint(wmRuntimeInfo.getHttpBaseUrl())
             .clientId("test-client").clientSecret("test-secret")
             .build());