Update README.md

README.md

@@ -444,7 +444,6 @@ Moreover, the dataset was splitted into several categories, naming:
 | `py` | Only `.py` files in changes | 4,339 |
 | `java` | Only `.java` files in changes | 2,522  | 
 | 'kt'  | Only `.kt` files in changes | 618  |
-| 'mixed' | At list one `.java`, `.py`, or `.kt` file in changes with any other changed files | 2,322 |
 
 And splits, naming:
 | **Split**   |  **Description**  |
@@ -462,7 +461,7 @@ The following sections will describe the utilities around the dataset as well as
     ```py
     from datasets import load_dataset
     
-    # Select a configuration from ["py", "java", "kt", "mixed"]
+    # Select a configuration from ["py", "java", "kt"]
     configuration = "py"
     # Select a split from ["dev", "train", "test"]
     split = "dev"