L1EnergyCMXTools: fix clang warning
Fixing following warning
In file included from /build/atnight/localbuilds/nightlies/master/athena/Trigger/TrigT1/TrigT1CaloTools/src/L1EnergyCMXTools.cxx:16:
/build/atnight/localbuilds/nightlies/master/athena/Trigger/TrigT1/TrigT1CaloTools/TrigT1CaloTools/L1EnergyCMXTools.h:130:14: warning: private field 'm_maskXE' is not used [-Wunused-private-field]
uint32_t m_maskXE;
^
/build/atnight/localbuilds/nightlies/master/athena/Trigger/TrigT1/TrigT1CaloTools/TrigT1CaloTools/L1EnergyCMXTools.h:131:14: warning: private field 'm_maskTE' is not used [-Wunused-private-field]
uint32_t m_maskTE;
^