message: Remove unused `keymap_setting`.
diff: @@ -540,7 +540,6 @@ TEST_F(KeyMapTest, Reconvert) {
  }
  TEST_F(KeyMapTest, Initialize) {
  - config::Config::SessionKeymap keymap_setting;
  commands::KeyEvent key_event;
  ConversionState::Commands conv_command;
  @@ -552,7 +551,6 @@ TEST_F(KeyMapTest, Initialize) {
  }
  { // MSIME
  KeyMapManager manager(config::Config::MSIME);
  - keymap_setting = config::Config::MSIME;
  KeyParser::ParseKey("Right", &key_event);
  EXPECT_TRUE(manager.GetCommandConversion(key_event, &conv_command));
  EXPECT_EQ(ConversionState::SEGMENT_FOCUS_RIGHT, conv_command);
  