input: Write a function to delete all duplicates in a given list of numbers. If the given list is empty, return an empty list. Use the function name deleteDuplicates and ensure it takes one parameter, list.
  
  assert deleteDuplicates([1, 2, 3, 4, 4, 5, 6, 6])==[1, 2, 3, 4, 5, 6]
  assert deleteDuplicates([1, 1, 1, 1, 1])==[1]
  assert deleteDuplicates([1, 2, 3, 4, 5])==[1, 2, 3, 4, 5]
  assert deleteDuplicates([7, 7, 7, 7, 7])==[7]
  assert deleteDuplicates([])==[]
output: def deleteDuplicates(list):
      return list(set(list))