docs(llama): delete fabricated ornith-llama-cpp-setup tree (608 lines)

Night fact-check falsified the tree's subject: no `ornith` CLI exists
(npm 404), github.com/rhitching/ornith is 404, and the model IDs the
tree cites are wrong — the real family is ornith-ai/Ornith-1.0/1.5
(9B, 35B-A3B, 397B), built on Qwen3.5/Gemma4 per its model card, not
the 'Ornith-9B-Thinking-1.5T based on Qwen3-8B' the docs assert.
Nothing in the tree describes this fleet: no ornith binary on PATH
(audit 2026-10-18 said the same). Real facts it echoed (PrismML fork
on frank-zealot) already live in /system/.

Also: tools/index.md de-duplicated (same files were listed twice, once
as wikilinks once as links, live-sync missorted) and links normalized;
llama-cpp setup/index xrefs retargeted.

Refs #29

omp-docs/tools/llama-cpp/setup.md

@@ -263,4 +263,3 @@ sudo systemctl start llama-server
 ## Cross-References
 
 - See [Overview](index.md) for API reference and usage examples.
-- See [Ornith Setup](../ornith-llama-cpp-setup/index.md) for model-specific configuration.