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 group of people on a street next to orange and white umbrellas'. Remove all words of length '9' in the given sentence.
Example Output: a group of people on a street next to orange and white

Example Input: Sentence: 'a boat in the water filled with people'. Remove all words of length '2' in the given sentence.
Example Output: a boat the water filled with people

Example Input: Sentence: 'a couple of people stand next to a being pulled by horses'. Remove all words of length '1' in the given sentence.
Example Output:
couple of people stand next to being pulled by horses