Load bearing wall or not??

Hello, I have started my bathroom demo, i want to remove the toilet walls and join it so it is one big bathroom.

i noticed the top plate has a few metal brackets not sure if it is supporting weight or not?

am i safe to remove the verticle timber posts and door bulkheads?

you can see in the attic photo the position of the vent exhaust for reference,

any replies would be much appreciated, thanks

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