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 bunch of bananas are shown sitting on a chair'. Remove all words of length '2' in the given sentence.
Example Output: a bunch bananas are shown sitting a chair

Example Input: Sentence: 'a group of people on horses in a field'. Remove all words of length '2' in the given sentence.
Example Output: a group people horses a field

Example Input: Sentence: 'a tent is set up in the field where the flock of sheep are gathered'. Remove all words of length '3' in the given sentence.
Example Output:
a tent is up in field where flock of sheep gathered