Backpack does not support --erase argument

[jurgelenas]

> python /home/user/.config/Electron/firmwares/cloud/Backpack/09fc175b4ecc28b784a30bb1a568102432248f02/firmware/flasher.pyz --dir=/home/user/.config/Electron/firmwares/cloud/Backpack/09fc175b4ecc28b784a30bb1a568102432248f02/firmware --target=radiosky.txbp.v12 --phrase=*** --ssid=*** --password=*** --flash=etx --erase
usage: flasher.pyz [-h] [--dir DIR] [--phrase PHRASE] [--ssid SSID]
                   [--password PASSWORD] [--auto-wifi AUTO_WIFI]
                   [--no-auto-wifi] [--target TARGET]
                   [--flash {uart,passthru,etx,wifi,dir}] [--out OUT]
                   [--port PORT] [--baud BAUD] [--force] [--confirm]
                   [file]
flasher.pyz: error: unrecognized arguments: --erase