input: Write a function that eliminates empty tuples from a list of tuples.
  assert remove_empty_tuples([(), (), ('',), ('a', 'b'), ('a', 'b', 'c'), ('d')])==[('',), ('a', 'b'), ('a', 'b', 'c'), 'd']  
  assert remove_empty_tuples([(), (), ('',), ("python"), ("program")])==[('',), ("python"), ("program")]  
  assert remove_empty_tuples([(), (), ('',), ("java")])==[('',),("java") ]
output: def remove_empty_tuples(lst):
      return [t for t in lst if t]