Disable fading when alsa device is selected

src/CMakeLists.txt

@@ -210,7 +210,6 @@ set(SOURCES
   settings/behavioursettingspage.cpp
   settings/collectionsettingspage.cpp
   settings/backendsettingspage.cpp
-  settings/playbacksettingspage.cpp
   settings/playlistsettingspage.cpp
   settings/networkproxysettingspage.cpp
   settings/appearancesettingspage.cpp
@@ -385,7 +384,6 @@ set(HEADERS
   settings/behavioursettingspage.h
   settings/collectionsettingspage.h
   settings/backendsettingspage.h
-  settings/playbacksettingspage.h
   settings/playlistsettingspage.h
   settings/networkproxysettingspage.h
   settings/appearancesettingspage.h
@@ -477,7 +475,6 @@ set(UI
   settings/behavioursettingspage.ui
   settings/collectionsettingspage.ui
   settings/backendsettingspage.ui
-  settings/playbacksettingspage.ui
   settings/playlistsettingspage.ui
   settings/networkproxysettingspage.ui
   settings/appearancesettingspage.ui