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 in a wetsuit surfing on a wave by a pier'. Remove all words of length '3' in the given sentence.
a in a wetsuit surfing on a wave by a pier

Sentence: 'a large kitchen with an abundance of white cabinets'. Remove all words of length '7' in the given sentence.
a large with an abundance of white cabinets

Sentence: 'a large group of people gathered outside of a building'. Remove all words of length '6' in the given sentence.

a large group of gathered outside of a building