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 field of green grass that has five surfboard positioned in a half circle together'. Remove all words of length '9' in the given sentence.
Example Output: a field of green grass that has five positioned in a half circle together

Example Input: Sentence: 'a large airplane flies in blue skies over some pretty trees'. Remove all words of length '6' in the given sentence.
Example Output: a large airplane flies in blue skies over some trees

Example Input: Sentence: 'professional tennis player returning volley during sanctioned match'. Remove all words of length '9' in the given sentence.
Example Output:
professional tennis player volley during sanctioned match