Remove obsolete Devign README reference

README.md

@@ -19,10 +19,8 @@ size_categories:
 This repository provides the processed code datasets used in the HAM-Net
 experiments for cross-project software defect prediction.
 
-Each JSONL record represents either:
-
-- one source-code function, for the original Devign dataset;
-- one source-code file or Java class containing multiple functions.
+Each JSONL record represents one source-code file or Java class containing
+multiple functions.
 
 For datasets organized by file or class, HAM-Net treats the file/class as a
 **bag** and its functions as **instances**, following the multiple-instance