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: 'dog looks on outside of a travel bag on the back of a bicycle'. Remove all words of length '6' in the given sentence.
Example Output: dog looks on outside of a bag on the back of a bicycle

Example Input: Sentence: 'several boot designed flower planters on sticks with different types of flowers in them'. Remove all words of length '9' in the given sentence.
Example Output: several boot designed flower planters on sticks with types of flowers in them

Example Input: Sentence: 'a group of men riding horses while leading even more horses behind them'. Remove all words of length '3' in the given sentence.
Example Output:
a group of riding horses while leading even more horses behind them