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 bear sitting on top of a fallen log at a zoo'. Remove all words of length '7' in the given sentence.
Example Output: a black bear on top of a fallen log at a zoo

Example Input: Sentence: 'a tray filled with lots of fries next to a hot dog'. Remove all words of length '2' in the given sentence.
Example Output: a tray filled with lots fries next a hot dog

Example Input: Sentence: 'the catcher and umpire are at home plate at a baseball game'. Remove all words of length '7' in the given sentence.
Example Output:
the and umpire are at home plate at a baseball game