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 close up of a person wearing a suit and tie operating a cell phone'. Remove all words of length '5' in the given sentence.
Example Output: a up of a person wearing a suit and tie operating a cell

Example Input: Sentence: 'a herd of sheep grazing on a green grass covered hill'. Remove all words of length '5' in the given sentence.
Example Output: a herd of grazing on a covered hill

Example Input: Sentence: 'a girl on a beach playing with a frisbee'. Remove all words of length '2' in the given sentence.
Example Output:
a girl a beach playing with a frisbee