In this task, you need to remove all words of a given length in the sentence. The number of letters in a word determine its length, for example, the length of the word "apple" is 5.

Sentence: 'a man with an afro getting a haircut at a barber shop'. Remove all words of length '1' in the given sentence.
man with an afro getting haircut at barber shop

Sentence: 'a cow stretching its head over a fence to eat some leaves'. Remove all words of length '4' in the given sentence.
a cow stretching its a fence to eat leaves

Sentence: 'a man riding a wave on top of a surfboard'. Remove all words of length '2' in the given sentence.

a man riding a wave top a surfboard