Update README.md

README.md

@@ -6,7 +6,7 @@ PEGASUS model was originally proposed by Jingqing Zhang, Yao Zhao,  Mohammad Sal
 
 
 #### Installing
-In order to use this model, you have to install Transformers and SentencePiece Tokenizer as follows:
+In order to use this model, you have to install Transformers as follows:
 
 ```Python
 pip install transformers