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 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: 'a silver train traveling past a tall brick building'. Remove all words of length '1' in the given sentence.
silver train traveling past tall brick building

Sentence: 'a couple of people carrying surfboards down a beach'. Remove all words of length '4' in the given sentence.

a couple of people carrying surfboards a beach