Remove leftover files for ENABLE_PAGE_POPUP and ENABLE_CALENDAR_PICKER

Remove leftover files for ENABLE_PAGE_POPUP and ENABLE_CALENDAR_PICKER
https://bugs.webkit.org/show_bug.cgi?id=116999

Reviewed by Anders Carlsson.

.:

* ManualTests/forms/calendar-picker-crash-by-type-change.html: Removed.
* ManualTests/forms/calendar-picker.html: Removed.
* ManualTests/forms/color-suggestion-picker.html: Removed.
* ManualTests/forms/date-suggestion-picker.html: Removed.

Source/WebCore:

* Resources/pagepopups/colorSuggestionPicker.css: Removed.
* Resources/pagepopups/colorSuggestionPicker.js: Removed.
* Resources/pagepopups/pickerCommon.css: Removed.
* Resources/pagepopups/pickerCommon.js: Removed.
* Resources/pagepopups/suggestionPicker.css: Removed.
* Resources/pagepopups/suggestionPicker.js: Removed.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@150934 268f45cc-cd09-0410-ab3c-d52691b4dbfc