Remove Portuguese retention explanation from README

Removed a line in Portuguese explaining file retention.

Author: henmohr

README.md

@@ -79,7 +79,6 @@ cp .env.example .env
 | `TZ` | `app` | Timezone (e.g., America/Sao_Paulo) |
 | `TRASHBIN_RETENTION_OBLIGATION` | `app` | Number of days files should remain in the recycle bin before being cleaned. |
 
-número de dias que os arquivos devem ficar retidos na liceira antes da limpeza
 > **PS**: Let's Encrypt only work in servers when the `VIRTUAL_HOST` and `LETSENCRYPT_HOST` have a valid public domain registered in a DNS server. Don't try to use in localhost, don't work!
 
 Create a network