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: 'people riding an elephant down a shady trail'. Remove all words of length '5' in the given sentence.
Example Output: people riding an elephant down a

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 view of a kitchen that appears to be very large'. Remove all words of length '4' in the given sentence.
Example Output:
a of a kitchen appears to be large