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 holding a cell phone standing next to a statue and stairs'. Remove all words of length '7' in the given sentence.
Example Output: a man a cell phone standing next to a statue and stairs

Example Input: Sentence: 'a couple of giraffe standing next to a small wooden tree'. Remove all words of length '6' in the given sentence.
Example Output: a of giraffe standing next to a small tree

Example Input: Sentence: 'a shetland sheep dog laying on a bed spread'. Remove all words of length '3' in the given sentence.
Example Output:
a shetland sheep laying on a spread