refactor app.py to remove condition_on_previous_text parameter from transcription functions; enhance output consistency

app.py

@@ -113,7 +113,6 @@ def stream_transcribe(stream, new_chunk):
             {"sampling_rate": sr, "raw": stream},
             generate_kwargs={
                 "language": "english",
-                "condition_on_previous_text": False,  # Prevents hallucinations
                 "no_repeat_ngram_size": 3,  # Prevents repetitive outputs
             }
         )["text"]
@@ -153,7 +152,6 @@ def transcribe(inputs, previous_transcription):
             filename,
             generate_kwargs={
                 "language": "english",
-                "condition_on_previous_text": False,
             }
         )["text"]
         
@@ -185,7 +183,6 @@ def translate_and_transcribe(inputs, previous_transcription, target_language):
             generate_kwargs={
                 "task": "translate", 
                 "language": target_language,
-                "condition_on_previous_text": False,
             }
         )["text"]