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 small cow standing on a lush green field'. Remove all words of length '5' in the given sentence.
Example Output: a cow standing on a lush

Example Input: Sentence: 'a small child on a skate board out doors'. Remove all words of length '5' in the given sentence.
Example Output: a on a out

Example Input: Sentence: 'a black and white circus photo of elephants'. Remove all words of length '9' in the given sentence.
Example Output:
a black and white circus photo of