rdn2/run_model: remove pcie_rc from pcie_group_*

From FVP version 11.15 onward, pcie_rc namespace has been removed from
pcie_group_* for which hierarchy file is passed. Update run_model.sh
scripts to remove pcie_rc param.

Signed-off-by: Vijayenthiran Subramaniam <vijayenthiran.subramaniam@arm.com>
Change-Id: I6032a85a599f346e5e04c8a26c72babc0d66ec88