T11542: Remove KHTML

[Volker Krause]

vkrause triaged this task as "Normal" priority.

TASK DETAIL
  https://phabricator.kde.org/T11542

To: vkrause
Cc: ngraham, #konqueror, #plasma, #okular, #kde_applications, #frameworks, 
knauss, GB_2, niccolove, kpiwowarski, vkrause, cordlandwehr, dfaure