Answer the question for Haskell code

Exercise 6 Write a function called removing which takes a list and a value as input and returns a list where all occurrences of that value is removed.

removing::(Eq a)=>[a]->a->[a]

Write a higher order function, called removeDuplicates, that removes all duplicates from a list and returns the list. This function should use the function removing to remove all duplicates.

removeDuplicates::(Eq a)=>[a]->[a]