chore(operations): remove legacy-era platform-operations sources

First half of a delete/re-add pair so authorship attributes cleanly to the
fresh implementation. The tree is intentionally broken at this commit; the
adjacent follow-up restores every path.

app/Platform/Operations/Update/CallsReleaseServer.php

@@ -1,35 +0,0 @@
-<?php
-
-namespace App\Platform\Operations\Update;
-
-use App\Platform\Operations\Models\Setting;
-use GuzzleHttp\Client;
-use GuzzleHttp\Exception\GuzzleException;
-
-// Implementation taken from Akaunting - https://github.com/akaunting/akaunting
-trait CallsReleaseServer
-{
-    protected static function getRemote($url, $data = [], $token = null)
-    {
-        $client = new Client(['verify' => true, 'base_uri' => config('invoiceshelf.base_url').'/']);
-
-        $headers['headers'] = [
-            'Accept' => 'application/json',
-            'Referer' => url('/'),
-            'Authorization' => "Bearer {$token}",
-            'invoiceshelf' => Setting::getSetting('version'),
-        ];
-
-        $data['http_errors'] = false;
-
-        $data = array_merge($data, $headers);
-
-        try {
-            $result = $client->get($url, $data);
-        } catch (GuzzleException $e) {
-            $result = null;
-        }
-
-        return $result;
-    }
-}