PulseaudioInput: Remove unused members
PulseaudioInput: Remove unused members

Clang warns about them.

Change-Id: I8fb2e9bc30f35ec9540b09a34bf23bf9eb671b9c
Reviewed-by: Tobias Hunger <012f8d714267bccc9d4766fbeace9f175fcc70c4@digia.com>

mer-qt/qtmultimedia,mer-qt/qtmultimedia,mer-qt/qtmultimedia,mer-qt/qtmultimedia,mer-qt/qtmultimedia