Definition: 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.
Input: Sentence: 'two men in wet suits and backpacks preparing their surfboards on side grass lawn'. Remove all words of length '3' in the given sentence.

in suits backpacks preparing their surfboards on side grass lawn