Merge pull request swiftlang#9775 from adrian-prantl/139995777

[lldb] Merge SwiftLanguageRuntimeImpl back into SwiftLanguageRuntime (NFC)

Author: adrian-prantl

lldb/source/Plugins/LanguageRuntime/Swift/ReflectionContext.cpp

@@ -12,7 +12,7 @@
 
 #include "swift/RemoteInspection/ReflectionContext.h"
 #include "ReflectionContextInterface.h"
-#include "SwiftLanguageRuntimeImpl.h"
+#include "SwiftLanguageRuntime.h"
 #include "lldb/Utility/LLDBLog.h"
 #include "lldb/Utility/Log.h"
 #include "swift/Demangling/Demangle.h"