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: 'the three giraffes are standing on the grassland'. Remove all words of length '2' in the given sentence.
Example Output: the three giraffes are standing the grassland

Example Input: Sentence: 'a small boy sitting on the grass with a suitcase'. Remove all words of length '4' in the given sentence.
Example Output: a small boy sitting on the grass a suitcase

Example Input: Sentence: 'a traffic light hanging from the side of a pole'. Remove all words of length '7' in the given sentence.
Example Output:
a light from the side of a pole