Remove stopped signal

This signal is no longer required so you can know that the recorder has
stopped just by checking the state change signal.

Change-Id: Iabc8f54e5fb8728465596ae0aed7da3b9e5ff0f0
Add more tests for recorderendpoint

Change-Id: Idb2a32e1e6777320a7930f6b935640a9be38ea66
Fix memory leak tests for recorder end point

Change-Id: Ica63ec9efadb8b18287b702cb5ce82f352a388fd
Enable memory leak tests for recorderendpoint

Change-Id: I5c39affd4f2da4ac9746e411e9ee71ef74551196