chore(donate): remove sentry integration

[marcelgerber]

Resolves #3177.

[owidbot]

Quick links (staging server): Site	Admin	Wizard

Login: ssh owid@staging-site-functions-remove-sentry

• Site-screenshots: https://github.com/owid/site-screenshots/compare/functions-remove-sentry
• SVG tester: https://github.com/owid/owid-grapher-svgs/compare/functions-remove-sentry

SVG tester:

Number of differences (default views): 0 ✅ Number of differences (all views): 0 ✅

Edited: 2024-06-20 22:25:15 UTC Execution time: 1.16 seconds