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 sits in a living room and watches television'. Remove all words of length '10' in the given sentence.
Example Output: a man sits in a living room and watches

Example Input: Sentence: 'a pile of oranges sitting next to a pile of green apples'. Remove all words of length '6' in the given sentence.
Example Output: a pile of oranges sitting next to a pile of green

Example Input: Sentence: 'a group of people watching a giraffe as they pass by on a truck'. Remove all words of length '6' in the given sentence.
Example Output:
a group of watching a giraffe as they pass by on a truck