Definition: 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.
Input: Sentence: 'a purple double decker bus travelling on a road near large black hook in the grass'. Remove all words of length '2' in the given sentence.

a purple double decker bus travelling a road near large black hook the grass