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: 'a train on the tracks in what seems to be a deserted area of town'. Remove all words of length '6' in the given sentence.

a train on the in what seems to be a deserted area of town