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 boy and girl sitting on top of a skateboard'. Remove all words of length '2' in the given sentence.
Example Output: a boy and girl sitting top a skateboard

Example Input: Sentence: 'there are three men standing together by a pole in the street'. Remove all words of length '8' in the given sentence.
Example Output: there are three men by a pole in the street

Example Input: Sentence: 'a couple of people with a bottle and a cell phone'. Remove all words of length '5' in the given sentence.
Example Output:
a couple of people with a bottle and a cell