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.

Sentence: 'a group of people who are hiking up a snowy mountain'. Remove all words of length '5' in the given sentence.
a of people who are hiking up a mountain

Sentence: 'a surfer jumps into the water in a canal'. Remove all words of length '2' in the given sentence.
a surfer jumps into the water a canal

Sentence: 'a cat is perched on the top of a toilet seat in the bathroom'. Remove all words of length '7' in the given sentence.

a cat is on the top of a toilet seat in the bathroom