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: 'a man is falling off of his skateboard after trying to skate on an incline with a plywood ramp'. Remove all words of length '6' in the given sentence.
Example Output: a man is falling off of his skateboard after to skate on an incline with a plywood ramp

Example Input: Sentence: 'a stack of donuts sitting on a piece of paper'. Remove all words of length '7' in the given sentence.
Example Output: a stack of donuts on a piece of paper

Example Input: Sentence: 'several dogs that are eating out of bowls'. Remove all words of length '3' in the given sentence.
Example Output:
several dogs that eating of bowls