refactor(sponsor): non-i18n content adjustment

[wanyewei]

Types of changes

• Refactoring

Description

Remove content that does not require i18n conversion.

Steps to Test This Pull Request

Steps to reproduce the behavior:

1. Into pages/sponsor/index.vue
2. Check line 54 in index.vue if $t('terms.contact') become [email protected] or not
3. Into i18n/sposor/index.i18n.js
4. Check if terms: {contact: '[email protected]', } has been removed from both en-us and zh-hant in index.i18n.js.
5. Into http://localhost:3000/2024/en-us/sponsor
6. Check if [email protected] showed normally or not

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[SivanYeh]

index.vue上把{{ $t('terms.contact') }}取代成[email protected]的調整方向確實對了。
但超連結的效果卻消失了，思考一下大概是什麼原因（hint: 跟你index.i18n.js調整有關

可以參考一下privacy-policy或tickets上對[email protected]的處理方法

[SivanYeh]

LGTM!