TrigPSC: cmake cleanup

HLT/Trigger/TrigControl/TrigPSC/CMakeLists.txt

-################################################################################
-# Package: TrigPSC
-################################################################################
+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 
 # Declare the package name:
 atlas_subdir( TrigPSC )
 
 # External dependencies:
-find_package( Boost COMPONENTS filesystem thread system )
+find_package( Boost )
 find_package( Python COMPONENTS Development )
 find_package( tdaq-common COMPONENTS ers eformat eformat_write hltinterface )
 
@@ -14,10 +12,10 @@ find_package( tdaq-common COMPONENTS ers eformat eformat_write hltinterface )
 atlas_add_library( TrigPSC
                    src/*.cxx
                    PUBLIC_HEADERS TrigPSC
-                   INCLUDE_DIRS ${TDAQ-COMMON_INCLUDE_DIRS}
-                   PRIVATE_INCLUDE_DIRS ${Boost_INCLUDE_DIRS} ${Python_INCLUDE_DIRS}
-                   LINK_LIBRARIES ${TDAQ-COMMON_LIBRARIES} GaudiKernel
-                   PRIVATE_LINK_LIBRARIES ${Boost_LIBRARIES} ${Python_LIBRARIES} TrigKernel PathResolver TrigConfBase )
+                   INCLUDE_DIRS ${Boost_INCLUDE_DIRS} ${TDAQ-COMMON_INCLUDE_DIRS}
+                   PRIVATE_INCLUDE_DIRS ${Python_INCLUDE_DIRS}
+                   LINK_LIBRARIES ${Boost_LIBRARIES} ${TDAQ-COMMON_LIBRARIES} GaudiKernel
+                   PRIVATE_LINK_LIBRARIES ${Python_LIBRARIES} CxxUtils TrigKernel PathResolver )
 
 # Install files from the package:
 atlas_install_python_modules( python/*.py POST_BUILD_CMD ${ATLAS_FLAKE8} )