Revert "Add comment to amd64_pmc.c regarding Linux kernel's use of one of the performance monitor counters for CPU lockup detection."
Revert "Add comment to amd64_pmc.c regarding Linux kernel's use of one of the performance monitor counters for CPU lockup detection."

This reverts commit a49930da9e2c4521323755e392b7408fe1619b43.

ubccr/tacc_stats,ubccr/tacc_stats,ubccr/tacc_stats,ubccr/tacc_stats,ubccr/tacc_stats