Remove obsolete code in input method handling

ui/views/win/hwnd_message_handler.cc

Index: ui/views/win/hwnd_message_handler.cc
diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
index 0f278c180e75dc2396df47fbb2473c60333c3534..9c01ec17e459644e594287dc8618333d741c3dd9 100644
--- a/ui/views/win/hwnd_message_handler.cc
+++ b/ui/views/win/hwnd_message_handler.cc
@@ -1248,10 +1248,6 @@ LRESULT HWNDMessageHandler::OnCreate(CREATESTRUCT* create_struct) {
               MAKELPARAM(UIS_CLEAR, UISF_HIDEFOCUS),
               0);
 
-  // Bug 964884: detach the IME attached to this window.
-  // We should attach IMEs only when we need to input CJK strings.
-  ImmAssociateContextEx(hwnd(), NULL, 0);
-
   if (remove_standard_frame_) {
     SetWindowLong(hwnd(), GWL_STYLE,
                   GetWindowLong(hwnd(), GWL_STYLE) & ~WS_CAPTION);