Remove sampler and serializer. Now they are handled through C++ interacting with Python.

src/SConscript:
src/cpu/base.cc:
src/cpu/base.hh:
src/cpu/checker/cpu.hh:
src/cpu/checker/cpu_impl.hh:
src/cpu/o3/cpu.cc:
src/cpu/o3/cpu.hh:
src/cpu/o3/fetch.hh:
src/cpu/ozone/cpu.hh:
src/cpu/ozone/cpu_impl.hh:
src/cpu/simple/base.cc:
src/cpu/simple/base.hh:
src/sim/pseudo_inst.cc:
    Remove sampler.
src/sim/sim_object.cc:
    Remove serializer.

--HG--
extra : convert_revision : ce7616189440f3dc70040148da6d07309a386008

src/SConscript

@@ -89,7 +89,6 @@ base_sources = Split('''
 	cpu/pc_event.cc
         cpu/quiesce_event.cc
 	cpu/static_inst.cc
-        cpu/sampler/sampler.cc
         cpu/simple_thread.cc
         cpu/thread_state.cc