Don't force the use of Accept-Language anymore

This is not intended anymore, since it falls back to force english
when the header is not set. Also 0228bc6e66
makes clear that the order should be:

1. User setting
2. Accept language
3. Admin default

This is the case since the commit from above, unless via OCS and DAV.
Both forced to accept-language falling back to english.
By removing the force, it now also matches the w3 priority list:
https://www.w3.org/International/questions/qa-lang-priorities

Signed-off-by: Joas Schilling <coding@schilljs.com>

remote.php

@@ -136,9 +136,6 @@ try {
 		throw new RemoteException('Path not found', OC_Response::STATUS_NOT_FOUND);
 	}
 
-	// force language as given in the http request
-	\OC::$server->getL10NFactory()->setLanguageFromRequest();
-
 	$file=ltrim($file, '/');
 
 	$parts=explode('/', $file, 2);