Moved profile composer to device-side only.

This change also splits up device-side longevity suite runner into a
profile-specific one and a longevity-specific one.

Bug: 120941099
Test: Unit tests pass; run SimpleProfileSuite as seen in longevity
library's README.

Change-Id: I8e01400ab7a82b96ed454a3e22cbc58a71671dde