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 black and white cow grazing in a field of green grass'. Remove all words of length '1' in the given sentence.
Example Output: black and white cow grazing in field of green grass

Example Input: Sentence: 'a man playing a video game on the nintendo wii'. Remove all words of length '3' in the given sentence.
Example Output: a playing a video game on nintendo

Example Input: Sentence: 'the plane is flying in the clear blue skies'. Remove all words of length '6' in the given sentence.
Example Output:
the plane is in the clear blue skies