Don't autorender tfdocs

--output requires a newer version of terraform-docs on
conda-forge
(conda-forge/go-terraform-docs-feedstock#25).

docs/conf.py

@@ -106,19 +106,4 @@ def render_hubs():
     df.to_csv(path_table, index=None)
 
 
-def render_tfdocs():
-    tf_path = Path('../terraform')
-    # Output path is relative to terraform directory
-    output_path = Path('../docs/topic/terraform/reference.md')
-
-    # Template for output file is in ../terraform/.terraform-docs.yml
-    subprocess.check_call([
-        'terraform-docs', 'markdown',
-        f"--output-file={output_path}",
-        str(tf_path)
-    ])
-
-
-
-render_hubs()
-render_tfdocs()
+render_hubs()