removed nltk dependency

Author: AlejandroEsquivel

pyproject.toml

@@ -28,7 +28,6 @@ rstr = "^3.2.2"
 typing-extensions = "^4.8.0"
 python-dateutil = "^2.8.2"
 tiktoken = ">=0.5.1"
-nltk = ">3.0, <=3.8.1"
 litellm = "^1.37.14"
 sqlvalidator = {version = "^0.0.20", optional = true}
 sqlalchemy = {version = ">=2.0.9", optional = true}