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 youth rides his skateboard over a footbridge'. Remove all words of length '4' in the given sentence.
Example Output: a black youth rides his skateboard a footbridge

Example Input: Sentence: 'a san francisco street corner with stop sign bike path directions and ethnic cafe'. Remove all words of length '6' in the given sentence.
Example Output: a san francisco with stop sign bike path directions and cafe

Example Input: Sentence: 'an all way stop sign is underneath a street sign'. Remove all words of length '4' in the given sentence.
Example Output:
an all way is underneath a street