Add command to delete saved wallet config

**Describe the enhancement**

The wallet config command stores the configuration information for a wallet in the `config.toml` file which is then reused on all subsequent wallet operations. However, there is no way to remove/delete a wallet configuration even when the wallet may no longer be needed.

Adding a command to delete a saved wallet configuration will help reduce the number of redundant wallet configurations and improve the amount of data saved in the config file.

**Use case**

- This will allow users to clean up the wallet config file and remove redundant wallet configs.

Parte del comando existente wallet config y del manejo de config.toml que utiliza. Sigue cómo se seleccionan las configuraciones de wallet guardadas para operaciones posteriores de wallet y define como terminado un comando que elimine la configuración elegida e impida que vuelva a utilizarse.

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