Revert chat format test

Author: abetlen

tests/test_llama_chat_format.py

@@ -86,46 +86,3 @@ def test_hf_tokenizer_config_str_to_chat_formatter():
     )
 
     assert chat_formatter_respoonse.prompt == ("<s>[INST] Hello, world! [/INST]</s>" "")
-
-import uuid
-from jinja2 import Template
-from typing import List, Tuple, Any
-
-def render_and_strip_images(template_string: str, **template_args: Any) -> Tuple[str, List[int]]:
-    # Placeholder for images
-    image_placeholder = uuid.uuid4().hex
-
-    # Render the template
-    template = Template(template_string)
-    rendered = template.render(image=image_placeholder, **template_args)
-
-    # Find positions of image placeholders and remove them
-    positions: List[int] = []
-    current_pos = 0
-
-    while True:
-        pos = rendered.find(image_placeholder, current_pos)
-        if pos == -1:
-            break
-        # Adjust position for previously removed placeholders
-        adjusted_pos = pos - len(image_placeholder) * len(positions)
-        positions.append(adjusted_pos)
-        current_pos = pos + len(image_placeholder)
-
-    # Clean the rendered string
-    clean_rendered = rendered.replace(image_placeholder, '')
-
-    return clean_rendered, positions
-  
-
-def test_render_and_strip_images():
-    template_string = "Hello, {{name}}! {{image}} How are you? {{image}}"
-    template_args = {"name": "world"}
-
-    # Sanity test
-    assert Template(template_string).render({ "name": "world", "image": ""}) == "Hello, world!  How are you? "
-
-    rendered, positions = render_and_strip_images(template_string, **template_args)
-
-    assert rendered == "Hello, world!  How are you? "
-    assert positions == [14, 28]