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 woman relaxing feet up on a bench'. Remove all words of length '4' in the given sentence.
Example Output: a woman relaxing up on a bench

Example Input: Sentence: 'a pink sheep grazing with a large crowd of people in the background'. Remove all words of length '4' in the given sentence.
Example Output: a sheep grazing a large crowd of people in the background

Example Input: Sentence: 'a group of people sitting around a table with clutter on top of it'. Remove all words of length '3' in the given sentence.
Example Output:
a group of people sitting around a table with clutter on of it