Remove federated flag from principal entity

Author: collado-mike

integration-tests/src/main/java/org/apache/polaris/service/it/test/PolarisManagementServiceIntegrationTest.java

@@ -18,7 +18,6 @@
  */
 package org.apache.polaris.service.it.test;
 
-import static javax.ws.rs.core.Response.Status.BAD_REQUEST;
 import static javax.ws.rs.core.Response.Status.CREATED;
 import static javax.ws.rs.core.Response.Status.FORBIDDEN;
 import static org.apache.polaris.service.it.env.PolarisClient.polarisClient;
@@ -874,21 +873,6 @@ public void testCreatePrincipalAndRotateCredentials() {
     // rotation that makes the old secret fall off retention.
   }
 
-  @Test
-  public void testCreateFederatedPrincipalFails() {
-    // Create a federated Principal
-    Principal federatedPrincipal =
-        new Principal(client.newEntityName("federatedPrincipal"), "abc", true, Map.of(), 0L, 0L, 1);
-
-    // Attempt to create the federated Principal using the managementApi
-    try (Response createPResponse =
-        managementApi
-            .request("v1/principals")
-            .post(Entity.json(new CreatePrincipalRequest(federatedPrincipal, false)))) {
-      assertThat(createPResponse).returns(BAD_REQUEST.getStatusCode(), Response::getStatus);
-    }
-  }
-
   @Test
   public void testCreateFederatedPrincipalRoleSucceeds() {
     // Create a federated Principal Role

polaris-core/src/main/java/org/apache/polaris/core/entity/PrincipalEntity.java

@@ -37,7 +37,6 @@ public static PrincipalEntity of(PolarisBaseEntity sourceEntity) {
   public static PrincipalEntity fromPrincipal(Principal principal) {
     return new Builder()
         .setName(principal.getName())
-        .setFederated(principal.getFederated())
         .setProperties(principal.getProperties())
         .setClientId(principal.getClientId())
         .build();
@@ -47,7 +46,6 @@ public Principal asPrincipal() {
     return new Principal(
         getName(),
         getClientId(),
-        FederatedEntities.isFederated(this),
         getPropertiesAsMap(),
         getCreateTimestamp(),
         getLastUpdateTimestamp(),

spec/polaris-management-service.yml

@@ -1101,10 +1101,6 @@ components:
         clientId:
           type: string
           description: The output-only OAuth clientId associated with this principal if applicable
-        federated:
-          type: boolean
-          description: Whether the principal is a federated identity (that is, managed by an external identity provider)
-          default: false
         properties:
           type: object
           additionalProperties: