Script: Fix the scripts that use the num_cpus cache parameter

This patch merely removes the use of the num_cpus cache parameter
which no longer exists after the introduction of the masterIds. The
affected scripts fail when trying to set the parameter. Note that this
patch does not update the regression stats.

configs/common/CacheConfig.py

@@ -46,7 +46,6 @@ def config_cache(options, system):
         system.tol2bus = Bus()
         system.l2.cpu_side = system.tol2bus.master
         system.l2.mem_side = system.membus.slave
-        system.l2.num_cpus = options.num_cpus
 
     for i in xrange(options.num_cpus):
         if options.caches:

tests/configs/realview-simple-atomic-dual.py

@@ -83,7 +83,6 @@ system.toL2Bus = Bus()
 system.l2c = L2(size='4MB', assoc=8)
 system.l2c.cpu_side = system.toL2Bus.master
 system.l2c.mem_side = system.membus.slave
-system.l2c.num_cpus = 2
 
 #connect up the cpu and l1s
 for c in cpus: