Update requirements.txt

requirements.txt

@@ -10,14 +10,11 @@ seaborn==0.13.2
 # Machine learning and numerical processing
 numpy==1.26.4
 scikit-learn==1.6.1
-torch==2.7.0
-transformers==4.51.3
-sentence-transformers==4.1.0
 numba==0.61.2
 fasttext==0.9.2
 
 # Tibetan language processing
-botok==0.9.0
+botok
 
 # Build system for Cython
 Cython==3.0.12