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 cuts things in a sink with cigarettes'. Remove all words of length '6' in the given sentence.
Example Output: a man cuts in a sink with cigarettes

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: 'there are several people gathered here talking together'. Remove all words of length '3' in the given sentence.
Example Output:
there several people gathered here talking together