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: 'traffic lights on a street on a building in the street'. Remove all words of length '1' in the given sentence.
Example Output: traffic lights on street on building in the street

Example Input: Sentence: 'a dog that is laying down on a blanket'. Remove all words of length '4' in the given sentence.
Example Output: a dog is laying on a blanket

Example Input: Sentence: 'people walking by a pole with  a lot of street signs on it'. Remove all words of length '2' in the given sentence.
Example Output:
people walking a pole with a lot street signs