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 white and black toilet sits in a bathroom'. Remove all words of length '4' in the given sentence.
Example Output: a white and black toilet in a bathroom

Example Input: Sentence: 'a person on a surfboard in the water'. Remove all words of length '6' in the given sentence.
Example Output: a on a surfboard in the water

Example Input: Sentence: 'a small bird perched on the branch of a plant'. Remove all words of length '1' in the given sentence.
Example Output:
small bird perched on the branch of plant