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: '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 motorcycle covered with a red blanket is parked in the middle of a plaza'. Remove all words of length '3' in the given sentence.
Example Output: a motorcycle covered with a blanket is parked in middle of a plaza

Example Input: Sentence: 'a park bench placed under trees in the woods'. Remove all words of length '6' in the given sentence.
Example Output:
a park bench under trees in the woods