Remove all Google Calendar references from documentation

README.md

@@ -143,7 +143,6 @@ Interested in supporting our community? Reach out to [[email protected]](mai
 <a href="https://datatalks.club/slack.html">Join Slack Community</a> •
 <a href="https://us19.campaign-archive.com/home/?u=0d7822ab98152f5afc118c176&id=97178021aa">Newsletter</a> •
 <a href="http://lu.ma/dtc-events">Upcoming Events</a> •
-<a href="https://calendar.google.com/calendar/?cid=ZjhxaWRqbnEwamhzY3A4ODA5azFlZ2hzNjBAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ">Google Calendar</a> •
 <a href="https://www.youtube.com/@DataTalksClub/featured">YouTube</a> •
 <a href="https://github.com/DataTalksClub">GitHub</a> •
 <a href="https://www.linkedin.com/company/datatalks-club/">LinkedIn</a> •

after-sign-up.md

@@ -12,6 +12,5 @@ To make sure you don't miss any announcements
 - Join the [course Telegram channel with announcements](https://t.me/dezoomcamp)
 - Subscribe to [DataTalks.Club's YouTube channel](https://www.youtube.com/c/DataTalksClub) and check 
   [the course playlist](https://www.youtube.com/playlist?list=PL3MmuxUbc_hJed7dXYoJw8DoCuVHhGEQb)
-- Subscribe to our [public Google Calendar](https://calendar.google.com/calendar/?cid=ZXIxcjA1M3ZlYjJpcXU0dTFmaG02MzVxMG9AZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ) (it works from Desktop only)
 
 See you in January!

cohorts/2022/README.md

@@ -4,4 +4,3 @@
 * **Start**: 17 January 2022
 * **Registration link**: https://airtable.com/shr6oVXeQvSI5HuWD
 * [Leaderboard](https://docs.google.com/spreadsheets/d/e/2PACX-1vR9oQiYnAVvzL4dagnhvp0sngqagF0AceD0FGjhS-dnzMTBzNQIal3-hOgkTibVQvfuqbQ69b0fvRnf/pubhtml)
-* Subscribe to our [public Google Calendar](https://calendar.google.com/calendar/?cid=ZXIxcjA1M3ZlYjJpcXU0dTFmaG02MzVxMG9AZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ) (it works from Desktop only)

cohorts/2023/README.md

@@ -1,7 +1,6 @@
 ## Data Engineering Zoomcamp 2023 Cohort
 
 * [Launch stream with course overview](https://www.youtube.com/watch?v=-zpVha7bw5A)
-* [Course Google calendar](https://calendar.google.com/calendar/?cid=ZXIxcjA1M3ZlYjJpcXU0dTFmaG02MzVxMG9AZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ)
 * [FAQ](https://datatalks.club/faq/data-engineering-zoomcamp.html)
 * [Public Leaderboard](leaderboard.md) and [Private Leaderboard](https://docs.google.com/spreadsheets/d/e/2PACX-1vTbL00GcdQp0bJt9wf1ROltMq7s3qyxl-NYF7Pvk79Jfxgwfn9dNWmPD_yJHTDq_Wzvps8EIr6cOKWm/pubhtml)
 * [Course Playlist: Only 2023 Live videos & homeworks](https://www.youtube.com/playlist?list=PL3MmuxUbc_hJjEePXIdE-LVUx_1ZZjYGW)

cohorts/2024/README.md

@@ -3,7 +3,6 @@
 * [Pre-launch Q&A stream](https://www.youtube.com/watch?v=91b8u9GmqB4)
 * [Launch stream with course overview](https://www.youtube.com/live/AtRhA-NfS24?si=5JzA_E8BmJjiLi8l)
 * [Deadline calendar](https://docs.google.com/spreadsheets/d/e/2PACX-1vQACMLuutV5rvXg5qICuJGL-yZqIV0FBD84CxPdC5eZHf8TfzB-CJT_3Mo7U7oGVTXmSihPgQxuuoku/pubhtml)
-* [Course Google calendar](https://calendar.google.com/calendar/?cid=ZXIxcjA1M3ZlYjJpcXU0dTFmaG02MzVxMG9AZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ)
 * [FAQ](https://datatalks.club/faq/data-engineering-zoomcamp.html)
 * Course Playlist: Only 2024 Live videos & homeworks (TODO)
 * [Public Leaderboard of Top-100 Participants](leaderboard.md)

cohorts/2025/README.md

@@ -2,7 +2,6 @@
 
 * [Pre-launch Q&A stream](https://www.youtube.com/watch?v=DPnAOu2csYA)
 * [Launch stream with course overview](https://www.youtube.com/watch?v=X8cEEwi8DTM)
-* [Course Google calendar](https://calendar.google.com/calendar/?cid=ZXIxcjA1M3ZlYjJpcXU0dTFmaG02MzVxMG9AZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ)
 * [FAQ](https://datatalks.club/faq/data-engineering-zoomcamp.html)
 * [Course Playlist](https://www.youtube.com/playlist?list=PL3MmuxUbc_hJed7dXYoJw8DoCuVHhGEQb)
 * [Cohort-specific playlist: only 2025 Live videos](https://www.youtube.com/playlist?list=PL3MmuxUbc_hJZdpLpRHp7dg6EOx828q6y)