Update .readthedocs.yml by removing deprecated syntax

See the logs from readthedocs build:
2023-08-30 11:31:52 -07:00 · 2023-08-30 11:31:52 -07:00 · 5bf5a373d7
parent 07fb1e2a1b
commit 5bf5a373d7
1 changed files with 0 additions and 1 deletions
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@ -21,6 +21,5 @@ formats: all

 # Optionally set the version of Python and requirements required to build your docs
 python:
-  system_packages: true
  install:
    - requirements: docs/requirements.txt