cpu_models: get rid of cpu_models.py and move the stuff into SCons

src/arch/SConscript

@@ -90,16 +90,6 @@ env.Append(SCANNERS = isa_scanner)
 # output from the ISA description (*.isa) files.
 #
 
-#
-# Grab the CPU Model information
-#
-
-# Convert to File node to fix path
-cpu_models_file = File('../cpu/cpu_models.py')
-
-# This sucks in the defintions of the CpuModel objects.
-execfile(cpu_models_file.srcnode().abspath)
-
 # The emitter patches up the sources & targets to include the
 # autogenerated files as targets and isa parser itself as a source.
 def isa_desc_emitter(target, source, env):