Remove perfprofd support.

This isn't finished, and no-one's working on finishing it.

(cherry picked from commit 5a12f19e)

Exempt-From-Owner-Approval: cherrypick
Test: builds
Change-Id: I0406afadc0663ef3c07acafcdf40f76c9bba27bf
Merged-In: I0406afadc0663ef3c07acafcdf40f76c9bba27bf