Removed -DPERFCTR20.  It is no longer used anywhere in 3.0.
Removed -DPERFCTR20.  It is no longer used anywhere in 3.0.

arm-hpc/papi,pyrovski/papi,arm-hpc/papi,pyrovski/papi,pyrovski/papi,pyrovski/papi,pyrovski/papi,arm-hpc/papi,arm-hpc/papi,pyrovski/papi,pyrovski/papi,arm-hpc/papi,pyrovski/papi,arm-hpc/papi,arm-hpc/papi