Remove arcanist projects from differential

Summary: Ref T7604. Remove arcanist projects from differential. Depends on D12687 and D12893.

Test Plan: Submitted a diff. Patched the diff with `arc patch`.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T7604

Differential Revision: https://secure.phabricator.com/D12894

src/applications/differential/query/DifferentialRevisionQuery.php

@@ -36,7 +36,6 @@ final class DifferentialRevisionQuery
   private $phids = array();
   private $responsibles = array();
   private $branches = array();
-  private $arcanistProjectPHIDs = array();
   private $repositoryPHIDs;
   private $updatedEpochMin;
   private $updatedEpochMax;
@@ -228,19 +227,6 @@ final class DifferentialRevisionQuery
   }
 
 
-  /**
-   * Filter results to only return revisions with a given set of arcanist
-   * projects.
-   *
-   * @param array List of project PHIDs.
-   * @return this
-   * @task config
-   */
-  public function withArcanistProjectPHIDs(array $arc_project_phids) {
-    $this->arcanistProjectPHIDs = $arc_project_phids;
-    return $this;
-  }
-
   public function withRepositoryPHIDs(array $repository_phids) {
     $this->repositoryPHIDs = $repository_phids;
     return $this;
@@ -771,13 +757,6 @@ final class DifferentialRevisionQuery
         $this->branches);
     }
 
-    if ($this->arcanistProjectPHIDs) {
-      $where[] = qsprintf(
-        $conn_r,
-        'r.arcanistProjectPHID in (%Ls)',
-        $this->arcanistProjectPHIDs);
-    }
-
     if ($this->updatedEpochMin !== null) {
       $where[] = qsprintf(
         $conn_r,