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: 'the toilet was placed right next to the bathtub and the sink was close to the door'. Remove all words of length '4' in the given sentence.

the toilet was placed right to the bathtub and the was close to the