Answer:
"One reason you may have more colds if you hold back tears is that, when you're under stress, your body puts out steroids which affect your immune system and reduce your resistance to disease,"
If a director wanted to make the story less depressing, they could cut out the ending in which they both commit suicide. This would greatly affect the message of the play. However, I am not sure if this is what you need.
I think its asking for what scenes in Romeo and Juliet and unnecessary but really, if you cut any scenes it will still affect the relationship between the characters as the audience will not seen them develop throughout the show
When Macbeth is greeted by the weird sisters as Thane of Cawdor and the future king he is speechless. Then, when he learns that he was named Thane of Cawdor, he thinks that the witches have to be right in everything they say, and he starts imagining that he murders King Duncan. That fantasy is less important for him than the things that are not yet true.