Remove /display/{nick}/{id} URL structure publishing

- Remove support for defunct Friendica F-Droid app

src/App.php

@@ -87,11 +87,6 @@ class App
 	 */
 	private $baseURL;
 
-	/**
-	 * @var bool true, if the call is from the Friendica APP, otherwise false
-	 */
-	private $isFriendicaApp;
-
 	/**
 	 * @var bool true, if the call is from an backend node (f.e. worker)
 	 */
@@ -257,8 +252,6 @@ class App
 		$this->profiler = $profiler;
 		$this->logger   = $logger;
 
-		$this->checkFriendicaApp();
-
 		$this->profiler->reset();
 
 		$this->reload();
@@ -601,28 +594,6 @@ class App
 			$this->getBaseURL();
 	}
 
-	/**
-	 * Checks, if the call is from the Friendica App
-	 *
-	 * Reason:
-	 * The friendica client has problems with the GUID in the notify. this is some workaround
-	 */
-	private function checkFriendicaApp()
-	{
-		// Friendica-Client
-		$this->isFriendicaApp = isset($_SERVER['HTTP_USER_AGENT']) && $_SERVER['HTTP_USER_AGENT'] == 'Apache-HttpClient/UNAVAILABLE (java 1.4)';
-	}
-
-	/**
-	 * 	Is the call via the Friendica app? (not a "normale" call)
-	 *
-	 * @return bool true if it's from the Friendica app
-	 */
-	public function isFriendicaApp()
-	{
-		return $this->isFriendicaApp;
-	}
-
 	/**
 	 * @brief Checks if the site is called via a backend process
 	 *