Delete unused method Win32Filesystem::GetAppPathname.

webrtc/base/win32filesystem.cc

Index: webrtc/base/win32filesystem.cc
diff --git a/webrtc/base/win32filesystem.cc b/webrtc/base/win32filesystem.cc
index 9a075c1e9e745437bede9fdc607914df53bc0846..faca8e9c08fb80536017173a639269cac2e1f054 100644
--- a/webrtc/base/win32filesystem.cc
+++ b/webrtc/base/win32filesystem.cc
@@ -174,12 +174,4 @@ bool Win32Filesystem::GetFileTime(const Pathname& path, FileTimeType which,
   return true;
 }
 
-bool Win32Filesystem::GetAppPathname(Pathname* path) {
-  TCHAR buffer[MAX_PATH + 1];
-  if (0 == ::GetModuleFileName(nullptr, buffer, arraysize(buffer)))
-    return false;
-  path->SetPathname(ToUtf8(buffer));
-  return true;
-}
-
 }  // namespace rtc