Purge dead gradio code

app.py

@@ -11,8 +11,6 @@ import json
 from pathlib import Path
 from dataclasses import dataclass
 
-from markdown_it import MarkdownIt # used for overriding default markdown renderer
-
 MODEL_NAME = "all-MiniLM-L6-v2"  # TODO: make configurable
 DIR = Path("index")
 SEARCH_TIME_S = 1  # TODO: optimize
@@ -222,17 +220,16 @@ with gr.Blocks() as demo:
         '[abstracts-search](https://github.com/colonelwatch/abstracts-search) on Github.'
     )
 
-    neighbors_var = gr.State()
-    request_str_var = gr.State()
-    response_var = gr.State()
     query = gr.Textbox(lines=1, placeholder='Enter your query here', show_label=False)
     btn = gr.Button('Search')
     with gr.Group():
-        results = gr.Markdown()
+        results = gr.Markdown(
+            latex_delimiters=[
+                {"left": "$$", "right": "$$", "display": False},
+                {"left": "$", "right": "$", "display": False},
+            ]
+        )
 
-    md = MarkdownIt('js-default', {'linkify': True, 'typographer': True}) # don't render html or latex!
-    results.md = md  # TODO: does this not work anymore?
-    
     query.submit(search, inputs=[query], outputs=[results])
     btn.click(search, inputs=[query], outputs=[results])