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: 'it is raining hard and two woman are walking down the street holding umbrellas'. Remove all words of length '9' in the given sentence.

it is raining hard and two woman are walking down the street holding