diff --git a/mailpoet/lib/Listing/Handler.php b/mailpoet/lib/Listing/Handler.php
index 17c63ac94d..a39b385458 100644
--- a/mailpoet/lib/Listing/Handler.php
+++ b/mailpoet/lib/Listing/Handler.php
@@ -2,75 +2,7 @@
 
 namespace MailPoet\Listing;
 
-use MailPoetVendor\Paris\Model;
-use MailPoetVendor\Paris\ORMWrapper;
-
 class Handler {
-  const DEFAULT_LIMIT_PER_PAGE = 20;
-
-  public function get($modelClass, array $data) {
-    $data = $this->processData($data);
-    $tableName = $modelClass::$_table;
-    $model = Model::factory($modelClass);
-    // get groups
-    $groups = [];
-    $groupsCallback = [$modelClass, 'groups'];
-    if (method_exists($modelClass, 'groups') && is_callable($groupsCallback)) {
-      $groups = call_user_func_array(
-        $groupsCallback,
-        [$data]
-      );
-    }
-
-    // get filters
-    $filters = [];
-    $filtersCallback = [$modelClass, 'filters'];
-    if (method_exists($modelClass, 'filters') && is_callable($filtersCallback)) {
-      $filters = call_user_func_array(
-        $filtersCallback,
-        [$data]
-      );
-    }
-
-    // get items and total count
-    $listingCallback = [$modelClass, 'listingQuery'];
-    if (method_exists($modelClass, 'listingQuery') && is_callable($listingCallback)) {
-      $customQuery = call_user_func_array(
-        $listingCallback,
-        [$data]
-      );
-
-      $count = $customQuery->count();
-
-      $items = $customQuery
-        ->offset($data['offset'])
-        ->limit($data['limit'])
-        ->{'order_by_' . $data['sort_order']}(
-          $tableName . '.' . $data['sort_by']
-        )
-        ->findMany();
-    } else {
-      $model = $this->setFilter($model, $data);
-      $this->setGroup($model, $data);
-      $this->setSearch($model, $data);
-      $this->setOrder($model, $data, $tableName);
-
-      $count = $model->count();
-
-      $items = $model
-        ->offset($data['offset'])
-        ->limit($data['limit'])
-        ->findMany();
-    }
-
-    return [
-      'count' => $count,
-      'filters' => $filters,
-      'groups' => $groups,
-      'items' => $items,
-    ];
-  }
-
   public function getListingDefinition(array $data): ListingDefinition {
     $data = $this->processData($data);
     return new ListingDefinition(
@@ -86,33 +18,6 @@ class Handler {
     );
   }
 
-  private function setSearch(ORMWrapper $model, array $data) {
-    if (empty($data['search'])) {
-      return;
-    }
-    return $model->filter('search', $data['search']);
-  }
-
-  private function setOrder(ORMWrapper $model, array $data, $tableName) {
-    return $model
-      ->{'order_by_' . $data['sort_order']}(
-        $tableName . '.' . $data['sort_by']);
-  }
-
-  private function setGroup(ORMWrapper $model, array $data) {
-    if ($data['group'] === null) {
-      return;
-    }
-    $model->filter('groupBy', $data['group']);
-  }
-
-  private function setFilter(ORMWrapper $model, array $data) {
-    if ($data['filter'] === null) {
-      return $model;
-    }
-    return $model->filter('filterBy', $data['filter']);
-  }
-
   /**
    * Polyfill for deprecated FILTER_SANITIZE_STRING which was used to sanitize
    * $data['sort_by'].
diff --git a/mailpoet/tasks/phpstan/phpstan-7-baseline.neon b/mailpoet/tasks/phpstan/phpstan-7-baseline.neon
index ab98ab7159..4a867404b5 100644
--- a/mailpoet/tasks/phpstan/phpstan-7-baseline.neon
+++ b/mailpoet/tasks/phpstan/phpstan-7-baseline.neon
@@ -630,16 +630,6 @@ parameters:
 			count: 1
 			path: ../../lib/Form/Renderer.php
 
-		-
-			message: "#^Cannot call method count\\(\\) on mixed\\.$#"
-			count: 1
-			path: ../../lib/Listing/Handler.php
-
-		-
-			message: "#^Cannot call method offset\\(\\) on mixed\\.$#"
-			count: 1
-			path: ../../lib/Listing/Handler.php
-
 		-
 			message: "#^Cannot cast mixed to int\\.$#"
 			count: 1
diff --git a/mailpoet/tasks/phpstan/phpstan-8-baseline.neon b/mailpoet/tasks/phpstan/phpstan-8-baseline.neon
index 5c92fbfca6..17490ed8b4 100644
--- a/mailpoet/tasks/phpstan/phpstan-8-baseline.neon
+++ b/mailpoet/tasks/phpstan/phpstan-8-baseline.neon
@@ -630,16 +630,6 @@ parameters:
 			count: 1
 			path: ../../lib/Form/Renderer.php
 
-		-
-			message: "#^Cannot call method count\\(\\) on mixed\\.$#"
-			count: 1
-			path: ../../lib/Listing/Handler.php
-
-		-
-			message: "#^Cannot call method offset\\(\\) on mixed\\.$#"
-			count: 1
-			path: ../../lib/Listing/Handler.php
-
 		-
 			message: "#^Cannot cast mixed to int\\.$#"
 			count: 1
diff --git a/mailpoet/tasks/phpstan/phpstan-8.1-baseline.neon b/mailpoet/tasks/phpstan/phpstan-8.1-baseline.neon
index 9bbfafff14..829bb65fde 100644
--- a/mailpoet/tasks/phpstan/phpstan-8.1-baseline.neon
+++ b/mailpoet/tasks/phpstan/phpstan-8.1-baseline.neon
@@ -630,16 +630,6 @@ parameters:
 			count: 1
 			path: ../../lib/Form/Renderer.php
 
-		-
-			message: "#^Cannot call method count\\(\\) on mixed\\.$#"
-			count: 1
-			path: ../../lib/Listing/Handler.php
-
-		-
-			message: "#^Cannot call method offset\\(\\) on mixed\\.$#"
-			count: 1
-			path: ../../lib/Listing/Handler.php
-
 		-
 			message: "#^Cannot cast mixed to int\\.$#"
 			count: 1