Mysore/Mysuru: A four-year-old girl was choked to death after she swallowed a five rupee coin at Hirekyathanahalli village in Hunsur taluk yesterday. She had been to her granny’s house when the tragedy struck.  The girl, named Kushi, accidentally swallowed the coin while playing at her grandmother’s house and began coughing continuously. Alerted by this, the…