Write a program to eliminate duplicate values in the list.

list1 = ['apple','bannana','cherry','apple']

list2 = []

print(list1)

for x in list1:

    if x not in list2:

        list2.append(x)

print(list2)      

output:

['apple', 'bannana', 'cherry', 'apple']

['apple', 'bannana', 'cherry']