emu: remove wait_engine files

These files are empty and do not serve any purpose currently

rpcs3/Emu/Memory/wait_engine.cpp

@@ -1 +0,0 @@
-#include "stdafx.h"

rpcs3/Emu/Memory/wait_engine.h

@@ -1 +0,0 @@
-#pragma once

rpcs3/emucore.vcxproj

@@ -276,7 +276,6 @@
     <ClCompile Include="Emu\Cell\SPUDisAsm.cpp" />
     <ClCompile Include="Emu\Cell\SPUInterpreter.cpp" />
     <ClCompile Include="Emu\IdManager.cpp" />
-    <ClCompile Include="Emu\Memory\wait_engine.cpp" />
     <ClCompile Include="Emu\RSX\Capture\rsx_capture.cpp" />
     <ClCompile Include="Emu\RSX\Capture\rsx_replay.cpp" />
     <ClCompile Include="Emu\RSX\CgBinaryFragmentProgram.cpp" />
@@ -523,7 +522,6 @@
     <ClInclude Include="Emu\Cell\SPUThread.h" />
     <ClInclude Include="Emu\CPU\CPUDisAsm.h" />
     <ClInclude Include="Emu\CPU\CPUThread.h" />
-    <ClInclude Include="Emu\Memory\wait_engine.h" />
     <ClInclude Include="Emu\RSX\Capture\rsx_capture.h" />
     <ClInclude Include="Emu\RSX\Capture\rsx_replay.h" />
     <ClInclude Include="Emu\RSX\Capture\rsx_trace.h" />

rpcs3/emucore.vcxproj.filters

@@ -665,9 +665,6 @@
     <ClCompile Include="Emu\VFS.cpp">
       <Filter>Emu</Filter>
     </ClCompile>
-    <ClCompile Include="Emu\Memory\wait_engine.cpp">
-      <Filter>Emu\Memory</Filter>
-    </ClCompile>
     <ClCompile Include="Emu\IdManager.cpp">
       <Filter>Emu</Filter>
     </ClCompile>
@@ -1303,9 +1300,6 @@
     <ClInclude Include="..\Utilities\AtomicPtr.h">
       <Filter>Utilities</Filter>
     </ClInclude>
-    <ClInclude Include="Emu\Memory\wait_engine.h">
-      <Filter>Emu\Memory</Filter>
-    </ClInclude>
     <ClInclude Include="..\Utilities\StrUtil.h">
       <Filter>Utilities</Filter>
     </ClInclude>