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 man and boy playing catch on a tennis court'. Remove all words of length '6' in the given sentence.
Example Output: a man and boy playing catch on a court

Example Input: Sentence: 'a zebra is standing in the green grass'. Remove all words of length '1' in the given sentence.
Example Output: zebra is standing in the green grass

Example Input: Sentence: 'tourists sit at a park while watching others in canoes'. Remove all words of length '8' in the given sentence.
Example Output:
sit at a park while others in canoes