Remove a really unnecessary method

apps/openmw/mwbase/soundmanager.hpp

@@ -127,9 +127,6 @@ namespace MWBase
             virtual void stopSound3D(const MWWorld::Ptr &reference) = 0;
             ///< Stop the given object from playing all sounds.
 
-            virtual void stopSound(MWBase::SoundPtr sound) = 0;
-            ///< Stop the given sound handle
-
             virtual void stopSound(const MWWorld::CellStore *cell) = 0;
             ///< Stop all sounds for the given cell.
 

apps/openmw/mwsound/soundmanagerimp.cpp

@@ -600,11 +600,6 @@ namespace MWSound
         return sound;
     }
 
-    void SoundManager::stopSound (MWBase::SoundPtr sound)
-    {
-        sound->stop();
-    }
-
     void SoundManager::stopSound3D(const MWWorld::Ptr &ptr, const std::string& soundId)
     {
         SoundMap::iterator snditer = mActiveSounds.find(ptr);

apps/openmw/mwsound/soundmanagerimp.hpp

@@ -181,9 +181,6 @@ namespace MWSound
         virtual void stopSound3D(const MWWorld::Ptr &reference);
         ///< Stop the given object from playing all sounds.
 
-        virtual void stopSound(MWBase::SoundPtr sound);
-        ///< Stop the given sound handle
-
         virtual void stopSound(const MWWorld::CellStore *cell);
         ///< Stop all sounds for the given cell.
 

apps/openmw/mwworld/projectilemanager.cpp

@@ -190,8 +190,7 @@ namespace MWWorld
             {
                 MWBase::Environment::get().getWorld()->explodeSpell(pos, it->mEffects, caster, ESM::RT_Target, it->mSpellId, it->mSourceName);
 
-                MWBase::Environment::get().getSoundManager()->stopSound(it->mSound);
-
+                it->mSound->stop();
                 mParent->removeChild(it->mNode);
 
                 it = mMagicBolts.erase(it);
@@ -265,7 +264,7 @@ namespace MWWorld
         for (std::vector<MagicBoltState>::iterator it = mMagicBolts.begin(); it != mMagicBolts.end(); ++it)
         {
             mParent->removeChild(it->mNode);
-            MWBase::Environment::get().getSoundManager()->stopSound(it->mSound);
+            it->mSound->stop();
         }
         mMagicBolts.clear();
     }

apps/openmw/mwworld/weather.cpp

@@ -735,11 +735,9 @@ void WeatherManager::update(float duration, bool paused)
 void WeatherManager::stopSounds()
 {
     if (mAmbientSound.get())
-    {
-        MWBase::Environment::get().getSoundManager()->stopSound(mAmbientSound);
-        mAmbientSound.reset();
-        mPlayingSoundID.clear();
-    }
+        mAmbientSound->stop();
+    mAmbientSound.reset();
+    mPlayingSoundID.clear();
 }
 
 float WeatherManager::getWindSpeed() const