Move ScheduledTask::findFutureScheduledByType() to ScheduledTasksRepository

Now that all other methods that use ScheduledTask::findByTypeAndStatus()
were moved to ScheduledTasksRepository, we can move
findFutureScheduledByType() as well and delete
ScheduledTask::findByTypeAndStatus().

[MAILPOET-3845]

lib/Models/ScheduledTask.php

@@ -5,7 +5,6 @@ namespace MailPoet\Models;
 use MailPoet\Entities\ScheduledTaskEntity;
 use MailPoet\Util\Helpers;
 use MailPoet\WP\Functions as WPFunctions;
-use MailPoetVendor\Carbon\Carbon;
 use MailPoetVendor\Idiorm\ORM;
 
 /**
@@ -153,32 +152,4 @@ class ScheduledTask extends Model {
       ->whereNull('tasks.deleted_at')
       ->findOne() ?: null;
   }
-
-  public static function findFutureScheduledByType($type, $limit = null) {
-    return self::findByTypeAndStatus($type, ScheduledTask::STATUS_SCHEDULED, $limit, true);
-  }
-
-  private static function findByTypeAndStatus($type, $status, $limit = null, $future = false) {
-    $query = ScheduledTask::where('type', $type)
-      ->whereNull('deleted_at');
-
-    $now = Carbon::createFromTimestamp(WPFunctions::get()->currentTime('timestamp'));
-    if ($future) {
-      $query->whereGt('scheduled_at', $now);
-    } else {
-      $query->whereLte('scheduled_at', $now);
-    }
-
-    if ($status === null) {
-      $query->whereNull('status');
-    } else {
-      $query->where('status', $status);
-    }
-
-    if ($limit !== null) {
-      $query->limit($limit);
-    }
-
-    return $query->findMany();
-  }
 }