[FLINK-36264]: remove applyIngressDomain

Author: chenyuzhi

flink-kubernetes-operator/src/main/java/org/apache/flink/kubernetes/operator/config/FlinkConfigBuilder.java

@@ -241,17 +241,6 @@ protected FlinkConfigBuilder applyPodTemplate() throws IOException {
         return this;
     }
 
-    protected FlinkConfigBuilder applyIngressDomain() {
-        // Web UI
-        if (spec.getIngress() != null
-                && effectiveConfig.getOptional(REST_SERVICE_EXPOSED_TYPE).isEmpty()) {
-            effectiveConfig.set(
-                    REST_SERVICE_EXPOSED_TYPE,
-                    KubernetesConfigOptions.ServiceExposedType.ClusterIP);
-        }
-        return this;
-    }
-
     protected FlinkConfigBuilder applyServiceAccount() {
         if (spec.getServiceAccount() != null) {
             effectiveConfig.set(
@@ -416,7 +405,6 @@ public static Configuration buildFrom(
                 .applyImagePullPolicy()
                 .applyServiceAccount()
                 .applyPodTemplate()
-                .applyIngressDomain()
                 .applyJobManagerSpec()
                 .applyTaskManagerSpec()
                 .applyJobOrSessionSpec()

flink-kubernetes-operator/src/test/java/org/apache/flink/kubernetes/operator/config/FlinkConfigBuilderTest.java

@@ -382,30 +382,6 @@ private PodTemplateSpec getTmPod(Configuration configuration) throws IOException
                 PodTemplateSpec.class);
     }
 
-    @ParameterizedTest
-    @MethodSource("serviceExposedTypes")
-    public void testApplyIngressDomain(
-            KubernetesConfigOptions.ServiceExposedType serviceExposedType) {
-
-        final Configuration configuration =
-                new FlinkConfigBuilder(
-                                flinkDeployment,
-                                serviceExposedType == null
-                                        ? new Configuration()
-                                        : new Configuration()
-                                                .set(
-                                                        KubernetesConfigOptions
-                                                                .REST_SERVICE_EXPOSED_TYPE,
-                                                        serviceExposedType))
-                        .applyIngressDomain()
-                        .build();
-        assertEquals(
-                serviceExposedType == null
-                        ? KubernetesConfigOptions.ServiceExposedType.ClusterIP
-                        : serviceExposedType,
-                configuration.get(KubernetesConfigOptions.REST_SERVICE_EXPOSED_TYPE));
-    }
-
     @Test
     public void testApplyServiceAccount() {
         final Configuration configuration =