fix removing of remotes

we have to save the remote config after removing the section

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

src/api2/config/remote.rs

@@ -269,6 +269,8 @@ pub fn delete_remote(name: String, digest: Option<String>) -> Result<(), Error>
         None => bail!("remote '{}' does not exist.", name),
     }
 
+    remote::save_config(&config)?;
+
     Ok(())
 }