Revert "docs: Use python 3.7 via conda for readthedocs builds"

This reverts commit e7e31e5642ae56da3f768d9829036eab99f0c988.

We were using conda to get access to python 3.7 before rtd supported
it in their regular builds, but this led to problems pinning a
specific version of sphinx. See
https://github.com/readthedocs/readthedocs.org/issues/6870

diff --git a/docs/conda.yml b/docs/conda.yml
deleted file mode 100644 (file)
index 44c4274..0000000
--- a/docs/conda.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-# TODO: remove when RTD supports python 3.7 without conda
-name: tornado-docs
-dependencies:
-  - python=3.7
-  - pip:
-    - sphinx
-    - sphinx-rtd-theme
-    - sphinxcontrib-asyncio
-    - Twisted

diff --git a/readthedocs.yml b/readthedocs.yml
deleted file mode 100644 (file)
index e403820..0000000
--- a/readthedocs.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-# TODO: remove when RTD supports Python 3.7 without conda.
-# https://github.com/rtfd/readthedocs-docker-images/pull/73
-conda:
-  file: docs/conda.yml