Well, we see Bruce and Wanda together here:

I’m not sure if the movie has room for it, but they have at least a little bit to talk about together, so it might come up.
That
said, I think part of the reason for killing Pietro was so that Wanda
could have a story without needing to tie back to him. With every second
of screentime being so important, they might not feel Wanda bringing up
something we already know, that can’t affect the story anymore–she
loves and misses her brother–contributes enough to her development.