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: 'the black and white cow is looking at the camera'. Remove all words of length '6' in the given sentence.
Example Output: the black and white cow is looking at the

Example Input: Sentence: 'a woman standing in the snow holding her skis'. Remove all words of length '7' in the given sentence.
Example Output:
a woman standing in the snow her skis