First round of dead file removal

experimental/windows_debugger/debugger/base/debug_system.cc

Index: experimental/windows_debugger/debugger/base/debug_system.cc
diff --git a/experimental/windows_debugger/debugger/base/debug_system.cc b/experimental/windows_debugger/debugger/base/debug_system.cc
deleted file mode 100644
index e9ea16ed2611003e7ea3008d2b6676ab1cb31f1d..0000000000000000000000000000000000000000
--- a/experimental/windows_debugger/debugger/base/debug_system.cc
+++ /dev/null
@@ -1,20 +0,0 @@
-#include "debug_system.h"
-#include <windows.h>
-
-namespace debug {
-std::string System::GetLastErrorDescription(int error_code) {
-  if (0 == error_code)
-		error_code = ::GetLastError();
-
-  char buff[ 2000 ] = { '?', 0 };
-	::FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
-		              0,
-                  error_code,
-                  MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-					        buff,
-                  sizeof(buff),
-                  0);
-
-	return std::string(buff);
-}
-}  // namespace debug