Revert "trancoding: lazy-start transcoding service"

This reverts commit 0621358a526d2ede2e675a1992ce304bcdcb83b8.

Reason for revert: change to conditional start.

Bug: 187271658
Test: atest MediaTranscodeManagerTest; unit tests
Change-Id: Iba169a3b50e37b72fab4e354480451cf05ab5be5
1 file changed