[Examples] Fix qwen vision examples (#1481)

## Purpose ##
* Fix qwen vision examples

## Background ##
* After #1118 merged, some examples no longer produce explicit
"calibration" splits

## Changes ##
* Do not explicitly get "calibration" split for qwen examples

---------

Signed-off-by: Kyle Sayers <[email protected]>

Author: kylesayrs

examples/multimodal_vision/qwen2_vl_example.py

@@ -69,7 +69,7 @@ def preprocess_and_tokenize(example):
     )
 
 
-ds = ds.map(preprocess_and_tokenize, remove_columns=ds["calibration"].column_names)
+ds = ds.map(preprocess_and_tokenize, remove_columns=ds.column_names)
 
 
 # Define a oneshot data collator for multimodal inputs.

examples/multimodal_vision/qwen_2_5_vl_example.py

@@ -65,7 +65,7 @@ def preprocess_and_tokenize(example):
     )
 
 
-ds = ds.map(preprocess_and_tokenize, remove_columns=ds["calibration"].column_names)
+ds = ds.map(preprocess_and_tokenize, remove_columns=ds.column_names)
 
 
 # Define a oneshot data collator for multimodal inputs.