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 sitting on a bench at the beach'. Remove all words of length '5' in the given sentence.
Example Output: a sitting on a at the

Example Input: Sentence: 'a small child on a skate board out doors'. Remove all words of length '5' in the given sentence.
Example Output: a on a out

Example Input: Sentence: 'a skier going downhill with arms widely outstretched'. Remove all words of length '6' in the given sentence.
Example Output:
a skier going downhill with arms outstretched