remove rtd conf

.readthedocs.yaml

@@ -1,21 +0,0 @@
-# .readthedocs.yaml
-# Read the Docs configuration file
-# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
-
-# Required
-version: 2
-
-# Build documentation in the docs/ directory with Sphinx
-sphinx:
-   configuration: docs/conf.py
-
-# Optionally build your docs in additional formats such as PDF
-formats:
-   - pdf
-   - htmlzip
-   
-# Optionally set the version of Python and requirements required to build your docs
-python:
-   version: 3.7
-   install:
-   - requirements: docs/requirements.txt