removed unnecessary E_USER_NOTICE

Author: dg

src/Http/Response.php

@@ -290,7 +290,7 @@ private function checkHeaders()
 			throw new Nette\InvalidStateException('Cannot send header after HTTP headers have been sent' . ($file ? " (output started at $file:$line)." : '.'));
 
 		} elseif ($this->warnOnBuffer && ob_get_length() && !array_filter(ob_get_status(TRUE), function ($i) { return !$i['chunk_size']; })) {
-			trigger_error('Possible problem: you are sending a HTTP header while already having some data in output buffer. Try Tracy\OutputDebugger or start session earlier.', E_USER_NOTICE);
+			trigger_error('Possible problem: you are sending a HTTP header while already having some data in output buffer. Try Tracy\OutputDebugger or start session earlier.');
 		}
 	}
 

src/Http/Session.php

@@ -538,7 +538,7 @@ public function setHandler(\SessionHandlerInterface $handler)
 	private function sendCookie()
 	{
 		if (!headers_sent() && ob_get_level() && ob_get_length()) {
-			trigger_error('Possible problem: you are starting session while already having some data in output buffer. This may not work if the outputted data grows. Try starting the session earlier.', E_USER_NOTICE);
+			trigger_error('Possible problem: you are starting session while already having some data in output buffer. This may not work if the outputted data grows. Try starting the session earlier.');
 		}
 
 		$cookie = $this->getCookieParameters();

src/Http/SessionSection.php

@@ -97,7 +97,7 @@ public function &__get($name)
 	{
 		$this->start();
 		if ($this->warnOnUndefined && !array_key_exists($name, $this->data)) {
-			trigger_error("The variable '$name' does not exist in session section", E_USER_NOTICE);
+			trigger_error("The variable '$name' does not exist in session section");
 		}
 
 		return $this->data[$name];
@@ -191,7 +191,7 @@ public function setExpiration($time, $variables = NULL)
 			$time = Nette\Utils\DateTime::from($time)->format('U');
 			$max = (int) ini_get('session.gc_maxlifetime');
 			if ($max !== 0 && ($time - time() > $max + 3)) { // 0 - unlimited in memcache handler, 3 - bulgarian constant
-				trigger_error("The expiration time is greater than the session expiration $max seconds", E_USER_NOTICE);
+				trigger_error("The expiration time is greater than the session expiration $max seconds");
 			}
 			$whenBrowserIsClosed = FALSE;
 		}