Definition: 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.
Input: Sentence: 'many bunches of bananas in baskets and hanging up in a room with some other fruit in the background'. Remove all words of length '4' in the given sentence.

bunches of bananas in baskets and hanging up in a other fruit in the background