remove unused CLHEP_DEFINITIONS variable

cmake/Modules/ClhepToolchain.cmake

@@ -25,7 +25,6 @@ macro(clhep_toolchain)
 #
 # First we set the needed variables
 set(CLHEP_VERSION ${VERSION})
-set(CLHEP_DEFINITIONS )
 set(CLHEP_INCLUDE_DIR ${PROJECT_BINARY_DIR})
 
 # Now we configure the CLHEPConfig and CLHEPConfigVersion file templates,
@@ -104,7 +103,6 @@ endforeach()
 # Again we set the needed variable first. Not all have actually changed,
 # but we set again for clarity and just to be sure.
 set(CLHEP_VERSION ${VERSION})
-set(CLHEP_DEFINITIONS )
 
 # The setup of the include dir is slightly different because we want
 # to make the install relocatable (Current CLHEP setup *is* relocatable).

cmake/Templates/CLHEPConfig.cmake.in

 # - Config file for the CLHEP package
 # It defines the following variables
 #  CLHEP_INCLUDE_DIRS - include directories for CLHEP
-#  CLHEP_DEFINITIONS  - compile definitions needed to use CLHEP
 #  CLHEP_LIBRARIES    - libraries to link against
 #
 # You may supply a version number through find_package which will be checked
@@ -110,12 +109,6 @@ set(CLHEP_INCLUDE_DIR @CLHEP_INCLUDE_DIR@)
 #
 set(CLHEP_INCLUDE_DIRS ${CLHEP_INCLUDE_DIR})
 
-#----------------------------------------------------------------------------
-# Set the compile definitions required to use CLHEP
-# We don't really need this for now.
-set(CLHEP_DEFINITIONS @CLHEP_DEFINITIONS@)
-
-
 #----------------------------------------------------------------------------
 # Include the file listing all the imported targets.
 # This is installed in the same location as us...