Remove punkt_tab references and update NLTK data handling

Dockerfile

@@ -58,7 +58,6 @@ RUN python -c "import nltk; nltk.download('punkt', download_dir='/usr/local/shar
     && python -c "import nltk; nltk.download('stopwords', download_dir='/usr/local/share/nltk_data')" \
     && python -c "import nltk; nltk.download('wordnet', download_dir='/usr/local/share/nltk_data')" \
     && python -c "import nltk; nltk.download('averaged_perceptron_tagger', download_dir='/usr/local/share/nltk_data')" \
-    && python -c "import nltk; nltk.download('punkt_tab', download_dir='/usr/local/share/nltk_data')" \
     && chmod -R 755 /usr/local/share/nltk_data
 
 # Set NLTK_DATA environment variable

app.py

@@ -93,8 +93,7 @@ try:
         'tokenizers/punkt',
         'corpora/stopwords',
         'corpora/wordnet',
-        'taggers/averaged_perceptron_tagger',
-        'tokenizers/punkt_tab/english'
+        'taggers/averaged_perceptron_tagger'
     ]
 
     for resource in required_nltk_data: