Revert "models : Added support for RND1 Diffusion Language Model (ggml-org#17433)"

Reapply "models : Added support for RND1 Diffusion Language Model (ggml-org#17433)"

This reverts commit 9a962043f7bc7101fad4bab596ab61c23cee582f.

Update llama-model.cpp

Author: Nexesenex

src/llama-model.cpp

@@ -108,6 +108,7 @@
 #include "models/qwen3vl.cpp"
 #include "models/qwen3vl-moe.cpp"
 #include "models/qwen3moe.cpp"
+#include "models/rnd1.cpp"
 #include "models/refact.cpp"
 #include "models/rwkv6-base.cpp"
 #include "models/rwkv6.cpp"