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 couple of airplanes sitting outside of a building'. Remove all words of length '1' in the given sentence.
Example Output: couple of airplanes sitting outside of building

Example Input: Sentence: 'people looking at a pair of papier mache giraffes at a street fair'. Remove all words of length '5' in the given sentence.
Example Output: people looking at a pair of papier giraffes at a street fair

Example Input: Sentence: 'stuffed teddy bear covered with blanket in bed'. Remove all words of length '5' in the given sentence.
Example Output:
stuffed bear covered with blanket in bed