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.

Example Input: Sentence: 'a surfer is leaving the water with his board as the waves roll in'. Remove all words of length '4' in the given sentence.
Example Output: a surfer is leaving the water his board as the waves in

Example Input: Sentence: 'a city street with lots of stone buildings on both sides'. Remove all words of length '1' in the given sentence.
Example Output: city street with lots of stone buildings on both sides

Example Input: Sentence: 'a dog that is laying down on a couch'. Remove all words of length '3' in the given sentence.
Example Output:
a that is laying down on a couch