Revert "AESinkPULSE: Let Engine handle our volume"

This reverts commit 566e0efb7617bcf78063b6a3ad9ccc4005f39a70.
AESinkPULSE: Restore and sync volume with external programs
AESinkPULSE: Change samplerate to pulseaudioserver rate
AESinkPULSE: return false if device could not be found
Merge pull request #4451 from fritsch/pa-volume-fix-mainline

PulseAudio: Rework Volume