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 red fire hydrant covered in tan mud'. Remove all words of length '4' in the given sentence.
Example Output: a red hydrant covered in tan mud

Example Input: Sentence: 'a bus leads traffic down a city street'. Remove all words of length '7' in the given sentence.
Example Output: a bus leads down a city street

Example Input: Sentence: 'a clock is shown from the side of a building'. Remove all words of length '4' in the given sentence.
Example Output:
a clock is shown the of a building