.readthedocs.yaml: remove system-packages

Upstream stopped supporting this.

Change-Id: I5839728f14b1a5822489f6cb64dbdd7c6f73ee03
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
1 file changed
tree: b2dcb0a80625ee012f653349c8178c27b2624757
  1. docs/
  2. .gitignore
  3. .readthedocs.yaml