docs: sidebar only install, reference material;

following precedent of: nextstrain/docs.nextstrain.org#10 (comment)
nextstrain · Oct 1, 2020 · 4b86f95 · 4b86f95
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commit 4b86f95
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/doc/index.rst b/doc/index.rst
@@ -24,7 +24,6 @@ as `Docker <https://docker.com>`__, `Conda
     Introduction <self>
     installation
     commands/index
-    development
 
 
 Big Picture