DSPEmulator: Remove redundant parameter and code

PauseAndLock is only called with do_lock=true, so remove the parameter
and modify PauseAndLock accordingly.

Source/Core/Core/Core.cpp

@@ -780,7 +780,7 @@ static bool PauseAndLock(Core::System& system)
   const bool was_unpaused = system.GetCPU().PauseAndLock();
 
   // audio has to come after CPU, because CPU thread can wait for audio thread (m_throttle).
-  system.GetDSP().GetDSPEmulator()->PauseAndLock(true);
+  system.GetDSP().GetDSPEmulator()->PauseAndLock();
 
   // video has to come after CPU, because CPU thread can wait for video thread
   // (s_efbAccessRequested).

Source/Core/Core/DSPEmulator.h

@@ -22,7 +22,7 @@ public:
   virtual void Shutdown() = 0;
 
   virtual void DoState(PointerWrap& p) = 0;
-  virtual void PauseAndLock(bool do_lock) = 0;
+  virtual void PauseAndLock() = 0;
   virtual void UnpauseAndUnlock() = 0;
 
   virtual void DSP_WriteMailBoxHigh(bool cpu_mailbox, u16 value) = 0;

Source/Core/Core/HW/DSPHLE/DSPHLE.cpp

@@ -242,7 +242,7 @@ u16 DSPHLE::DSP_ReadControlRegister()
   return m_dsp_control.Hex;
 }
 
-void DSPHLE::PauseAndLock(bool do_lock)
+void DSPHLE::PauseAndLock()
 {
 }
 

Source/Core/Core/HW/DSPHLE/DSPHLE.h

@@ -34,7 +34,7 @@ public:
   void Shutdown() override;
   bool IsLLE() const override { return false; }
   void DoState(PointerWrap& p) override;
-  void PauseAndLock(bool do_lock) override;
+  void PauseAndLock() override;
   void UnpauseAndUnlock() override;
 
   void DSP_WriteMailBoxHigh(bool cpu_mailbox, u16 value) override;

Source/Core/Core/HW/DSPLLE/DSPLLE.cpp

@@ -287,23 +287,9 @@ u32 DSPLLE::DSP_UpdateRate()
   return 12600;  // TO BE TWEAKED
 }
 
-void DSPLLE::PauseAndLock(bool do_lock)
+void DSPLLE::PauseAndLock()
 {
-  if (do_lock)
-  {
-    m_dsp_thread_mutex.lock();
-  }
-  else
-  {
-    m_dsp_thread_mutex.unlock();
-
-    if (m_is_dsp_on_thread)
-    {
-      // Signal the DSP thread so it can perform any outstanding work now (if any)
-      m_ppc_event.Wait();
-      m_dsp_event.Set();
-    }
-  }
+  m_dsp_thread_mutex.lock();
 }
 
 void DSPLLE::UnpauseAndUnlock()

Source/Core/Core/HW/DSPLLE/DSPLLE.h

@@ -26,7 +26,7 @@ public:
   void Shutdown() override;
   bool IsLLE() const override { return true; }
   void DoState(PointerWrap& p) override;
-  void PauseAndLock(bool do_lock) override;
+  void PauseAndLock() override;
   void UnpauseAndUnlock() override;
 
   void DSP_WriteMailBoxHigh(bool cpu_mailbox, u16 value) override;