🔧 Update sponsors: pause TestDriven (#13446)

docs/en/data/sponsors.yml

@@ -58,9 +58,9 @@ bronze:
   - url: https://www.exoflare.com/open-source/?utm_source=FastAPI&utm_campaign=open_source
     title: Biosecurity risk assessments made easy.
     img: https://fastapi.tiangolo.com/img/sponsors/exoflare.png
-  - url: https://testdriven.io/courses/tdd-fastapi/
-    title: Learn to build high-quality web apps with best practices
-    img: https://fastapi.tiangolo.com/img/sponsors/testdriven.svg
+  # - url: https://testdriven.io/courses/tdd-fastapi/
+  #   title: Learn to build high-quality web apps with best practices
+  #   img: https://fastapi.tiangolo.com/img/sponsors/testdriven.svg
   - url: https://lambdatest.com/?utm_source=fastapi&utm_medium=partner&utm_campaign=sponsor&utm_term=opensource&utm_content=webpage
     title: LambdaTest, AI-Powered Cloud-based Test Orchestration Platform
     img: https://fastapi.tiangolo.com/img/sponsors/lambdatest.png

docs/en/docs/advanced/index.md

@@ -19,18 +19,3 @@ And it's possible that for your use case, the solution is in one of them.
 You could still use most of the features in **FastAPI** with the knowledge from the main [Tutorial - User Guide](../tutorial/index.md){.internal-link target=_blank}.
 
 And the next sections assume you already read it, and assume that you know those main ideas.
-
-## External Courses
-
-Although the [Tutorial - User Guide](../tutorial/index.md){.internal-link target=_blank} and this **Advanced User Guide** are written as a guided tutorial (like a book) and should be enough for you to **learn FastAPI**, you might want to complement it with additional courses.
-
-Or it might be the case that you just prefer to take other courses because they adapt better to your learning style.
-
-Some course providers ✨ [**sponsor FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨, this ensures the continued and healthy **development** of FastAPI and its **ecosystem**.
-
-And it shows their true commitment to FastAPI and its **community** (you), as they not only want to provide you a **good learning experience** but also want to make sure you have a **good and healthy framework**, FastAPI. 🙇
-
-You might want to try their courses:
-
-* <a href="https://training.talkpython.fm/fastapi-courses" class="external-link" target="_blank">Talk Python Training</a>
-* <a href="https://testdriven.io/courses/tdd-fastapi/" class="external-link" target="_blank">Test-Driven Development</a>