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: 'an amtrak train that is slowly pulling into the station'. Remove all words of length '7' in the given sentence.
Example Output: an amtrak train that is slowly into the

Example Input: Sentence: 'a man holding a tennis racket with a white hat'. Remove all words of length '7' in the given sentence.
Example Output: a man a tennis racket with a white hat

Example Input: Sentence: 'a white road curve sign under a blue sky'. Remove all words of length '3' in the given sentence.
Example Output:
a white road curve sign under a blue