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 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: 'the bright lights of the city by a street at night'. Remove all words of length '2' in the given sentence.
Example Output: the bright lights the city a street night

Example Input: Sentence: 'asian elephants entering water way such as a lake'. Remove all words of length '3' in the given sentence.
Example Output:
asian elephants entering water such as a lake