JavaScript: remove unnecessary "Conditional Expression" context
Summary: The "Conditional Expression" context generates bugs when using JavaScript as an embedded language (for example, in HTML or CoffeeScript), since it prevents closing the JavaScript block after writing "?".
Reviewers: Framework: Syntax Highlighting, dhaumann, cullmann
Reviewed By: Framework: Syntax Highlighting, dhaumann
Subscribers: kwrite-devel, kde-frameworks-devel
Tags: Kate, Frameworks
Differential Revision: https://phabricator.kde.org/D23272