[NOTE][Posting] Revert regressions introduced with c90efe2c52

Entity Note: It doesn't make sense to handle attachments on Note::create.
Attachments exist out of Notes, they are a thing on their own.
Furthermore, they aren't always handled the same, they most definitely
aren't always uploaded files.

FileQuota: It doesn't make sense to check if a file is greater than max
allowed upload size here. The plugin ensures a user is inside his
allowed quota, it's ignorant to anything else. Whether a file respect
max upload is a core thing that must be handled directly in the Posting
component. TODO: The configuration regarding user and monthly quota
must become FileQuotaPlugin settings and be removed from core.

c90efe2c52 - [UI] Add mechanism for rendering note contents in different formats. Implement plaintext rendering. Use rendered field for note content, rather than the content itself

plugins/FileQuota/FileQuota.php

@@ -69,12 +69,6 @@ select sum(at.size) as total
     where ua.actor_id = :actor_id and at.size is not null
 END;
 
-        $max_file_size = Common::config('attachments', 'file_quota');
-        if ($max_file_size < $filesize) {
-            throw new ClientException(_m('No file may be larger than {quota} bytes and the file you sent was {size} bytes. ',
-                                         ['quota' => $max_file_size, 'size' => $filesize]));
-        }
-
         $max_user_quota = Common::config('attachments', 'user_quota');
         if ($max_user_quota !== false) { // If not disabled
             $cache_key_user_total = "FileQuota-total-user-{$user_id}";