Remove Descriptor proxy field from individual effect

This field should be filled by IFactory implementation

Bug: 271500140
Test: atest --test-mapping hardware/interfaces/audio/aidl/vts:presubmit
Change-Id: I96203b8cd037fd81b0b1d88fc5ca9915df02a919
Merged-In: I96203b8cd037fd81b0b1d88fc5ca9915df02a919
3 files changed