Fix: Deleting stale documents

[HiroyukiNaito]

These documents have already integrated into the hardhat.md, so it should be deleted.

• docs/_build/gettext/hardhat_console.pot
• docs/locale/es/LC_MESSAGES/hardhat_console.po
• docs/locale/fr/LC_MESSAGES/hardhat_console.po
• docs/locale/it/LC_MESSAGES/hardhat_console.po
• docs/locale/ko_KR/LC_MESSAGES/hardhat_console.po
• docs/locale/ru_RU/LC_MESSAGES/hardhat_console.po
• docs/locale/zh_CN/LC_MESSAGES/hardhat_console.po