Update .readthedocs.yaml

.readthedocs.yaml

@@ -30,5 +30,4 @@ formats:
 # See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
 python:
   install:
-    - requirements: requirements.txt
-    - requirements: docs/requirements.txt
+    - requirements: docs/requirements.txt