Fix: remove old app store button

[katspaugh]

What it solves

The old mobile app is being phased out, so removing the link to it from the footer.

[github-actions]

Branch preview

✅ Deploy successful!

Website:
https://rm_appstore--walletweb.review.5afe.dev/home?safe=eth:0xA77DE01e157f9f57C7c4A326eeE9C4874D0598b6

Storybook:
https://rm_appstore--walletweb.review.5afe.dev/storybook/

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	74.38% (+0.01% 🔼)	14045/18884
🔴	Branches	52.73% (+0.02% 🔼)	3492/6622
🔴	Functions	58.21% (+0.02% 🔼)	2057/3534
🟡	Lines	76% (+0.01% 🔼)	12756/16784

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟡	... / index.tsx	66.67% (-1.52% 🔻)	0%	0%	73.68% (-1.32% 🔻)

Test suite run success

1619 tests passing in 217 suites.

Report generated by 🧪jest coverage report action from 95d77d8

[github-actions]

📦 Next.js Bundle Analysis for safe-wallet-web

This analysis was generated by the Next.js Bundle Analysis action. 🤖

🎉 Global Bundle Size Decreased

Page	Size (compressed)
global	1 MB (🟢 -3.3 KB)

Details

The global bundle is the javascript bundle that loads alongside every page. It is in its own category because its impact is much higher - an increase to its size means that every page on your website loads slower, and a decrease means every page loads faster.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

If you want further insight into what is behind the changes, give @next/bundle-analyzer a try!