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: 'the man is focusing on something in his hand while holding up his bike with his leg'. Remove all words of length '5' in the given sentence.

the man is focusing on something in his hand holding up his bike with his leg