Revert "Make PulseAudioQT mandatory"

This breaks CI as PAQt is not yet available there

This reverts commit b48596d7c3.

CMakeLists.txt

@@ -31,7 +31,7 @@ else()
     endif()
     set(QCA_MIN_VERSION "2.1.0")
     find_package(Qca-qt5 ${QCA_MIN_VERSION} REQUIRED)
-    find_package(KF5PulseAudioQt REQUIRED)
+    find_package(KF5PulseAudioQt)
     add_definitions(-DQT_NO_URL_CAST_FROM_STRING -DQT_NO_KEYWORDS)
 endif()
 

plugins/CMakeLists.txt

@@ -7,7 +7,6 @@ add_subdirectory(battery)
 add_subdirectory(sendnotifications)
 add_subdirectory(mpriscontrol)
 add_subdirectory(photo)
-add_subdirectory(systemvolume)
 
 if(NOT SAILFISHOS)
     add_subdirectory(clipboard)
@@ -23,7 +22,6 @@ if(NOT SAILFISHOS)
     if(NOT WIN32)
         add_subdirectory(screensaver-inhibit)
         add_subdirectory(sftp)
-        add_subdirectory(pausemusic)
     endif()
 
     if(Qt5Multimedia_FOUND)
@@ -39,6 +37,12 @@ if(SAILFISHOS OR EXPERIMENTALAPP_ENABLED)
     add_subdirectory(remotesystemvolume)
 endif()
 
-# If we split notifications per plugin, in several notifyrc files, they won't 
-# appear in the same group in the Notifications KCM
+if(KF5PulseAudioQt_FOUND AND NOT WIN32)
+    add_subdirectory(pausemusic)
+endif()
+
+if(KF5PulseAudioQt_FOUND OR WIN32)
+    add_subdirectory(systemvolume)
+endif()
+
 install(FILES kdeconnect.notifyrc DESTINATION ${KNOTIFYRC_INSTALL_DIR})