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 black cat sitting on top of a pot for a plant'. Remove all words of length '7' in the given sentence.
a black cat on top of a pot for a plant

Sentence: 'a small pizza is on the pizza pan on the table'. Remove all words of length '5' in the given sentence.
a is on the pan on the

Sentence: 'five surfboards sitting on top of a green field'. Remove all words of length '1' in the given sentence.

five surfboards sitting on top of green field