Fix issue #4275

[vinh123456789]

Fix issue #4275, when using useLabels: false, dropdown("clear") won't
remove class "active" from "item"

[davidkuhta]

If we're calling module.remove.activeItem(); inside both the if and the else, shouldn't it be brought outside?
Something like:

clear: function() {
  if(module.is.multiple()) {
    module.remove.labels();
  }
  else {
    module.remove.selectedItem();
  }
  module.remove.activeItem();
  module.set.placeholderText();
  module.clearValue();
},

[vinh123456789]

You are right...
This is my first time contributions to a github project, I was so nervous that I would make a mistake, and here is it...

[davidkuhta]

Well technically it wasn't a mistake because your code worked, we just refactored. 😄
And whatever way @jlukic goes with this PR, thanks for helping to make Semantic UI better.

[jlukic]

remove labels calls remove values so this would cause values to remove twice when labels are present.

Probably need

clear: function() {
  if(module.is.multiple() && settings.useLabels) {
    module.remove.labels();
  }
  else {
    module.remove.selectedItem();
  }
  module.remove.activeItem();
  module.set.placeholderText();
  module.clearValue();
}

[jlukic]

Confirmed fix