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 small bird is on top of a branch'. Remove all words of length '6' in the given sentence.
Example Output: a small bird is on top of a

Example Input: Sentence: 'a woman standing next a window in a living room looking at a box on the floor'. Remove all words of length '6' in the given sentence.
Example Output: a woman standing next a in a room looking at a box on the floor

Example Input: Sentence: 'a young man swinging a tennis racquet on top of a tennis court'. Remove all words of length '8' in the given sentence.
Example Output:
a young man a tennis racquet on top of a tennis court