chore: remove duplicate requirements

backend/requirements.txt

@@ -19,7 +19,6 @@ psycopg2-binary==2.9.9
 PyMySQL==1.1.0
 bcrypt==4.1.2
 
-litellm==1.35.28
 litellm[proxy]==1.35.28
 
 boto3==1.34.95
@@ -54,7 +53,6 @@ rank-bm25==0.2.2
 
 faster-whisper==1.0.1
 
-PyJWT==2.8.0
 PyJWT[crypto]==2.8.0
 
 black==24.4.2