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: 'two people eating at a table and many people are watching them'. Remove all words of length '2' in the given sentence.
Example Output: two people eating a table and many people are watching them

Example Input: Sentence: 'this amtrak train is making its way down the tracks'. Remove all words of length '4' in the given sentence.
Example Output: amtrak train is making its way the tracks

Example Input: Sentence: 'an old green and brown car with chrome trim'. Remove all words of length '4' in the given sentence.
Example Output:
an old green and brown car chrome