Purpose of resistors on SDIO lines and antenna matching circuit?
The pull-ups are there to prevent a floating bus and their resistance range is mandated by SD interface specs. SD cards start in open-drain mode so it would not work without them.

The series resistors are there to limit signal rise/fall time. It acts as source termination for driving the bus, and by reducing the bandwidth, there is less ringing and over/undershoot on the wires.