remove deprecations

src/JsonapiParse.php

@@ -46,13 +46,7 @@ class JsonapiParse implements JsonapiParseInterface {
    * {@inheritdoc}
    */
   #[\Override]
-  public function parse(Response|string $response): Response|string {
-    // @todo Remove in the release 2.0 with removed the deprecated strings input.
-    if (!$response instanceof Response) {
-      @trigger_error('Parsing strings is deprecated in jsonapi_include:8.x-1.7 and is removed from jsonapi_include:8.x-2.0. Pass the full Response object instead. See https://www.drupal.org/project/jsonapi_include/issues/3374410', E_USER_DEPRECATED);
-      $content = $this->parseJsonContent($response);
-      return Json::encode($content);
-    }
+  public function parse(Response $response): Response {
     $this->parseJsonContent($response);
     return $response;
   }
@@ -249,20 +243,12 @@ class JsonapiParse implements JsonapiParseInterface {
    *   Returns an array with the response content, if the input is string or
    *   array, or void if input is a Response.
    */
-  protected function parseJsonContent(Response|string|array $response): Response|array {
-    if ($response instanceof Response) {
-      $content = $response->getContent();
-      if (is_string($content)) {
-        $content = Json::decode($content);
-      }
-    }
-    // @todo Remove in the release 2.0 with removed the deprecated string input.
-    elseif (is_array($response)) {
-      $content = $response;
-    }
-    elseif (is_string($response)) {
-      $content = Json::decode($response);
+  protected function parseJsonContent(Response $response): Response|array {
+    $content = $response->getContent();
+    if (is_string($content)) {
+      $content = Json::decode($content);
     }
+
     if (NestedArray::getValue($content, ['jsonapi', 'parsed'])) {
       return $response;
     }
@@ -286,14 +272,8 @@ class JsonapiParse implements JsonapiParseInterface {
     }
     $content['jsonapi']['parsed'] = TRUE;
     $content['data'] = $data;
-    if ($response instanceof Response) {
-      $response->setContent(Json::encode($content));
-      return $response;
-    }
-    // @todo Remove in the release 2.0 with removed the deprecated strings input.
-    else {
-      return $content;
-    }
+    $response->setContent(Json::encode($content));
+    return $response;
   }
 
 }