vocab : refactor tokenizer to reduce init overhead (#9449)
* refactor tokenizer
* llama : make llm_tokenizer more private
ggml-ci
* refactor tokenizer
* refactor tokenizer
* llama : make llm_tokenizer more private
ggml-ci
* remove unused files
* remove unused fileds to avoid unused filed build error
* avoid symbol link error
* Update src/llama.cpp
* Update src/llama.cpp
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Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>