D27847: [applet/taskmanager] Remove the launcher items' tooltip icons

[Nathaniel Graham]

ngraham created this revision.
ngraham added reviewers: VDG, Plasma.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
ngraham requested review of this revision.

REVISION SUMMARY
  As discussed in T12778 <https://phabricator.kde.org/T12778>, the icon can never be in a correct state: either it's
  redundant with the icon you're hovering over that made the tooltip appear, or
  else it's different from the icon you're hovering over, which is inconsistent.
  Furthermore, some instances of the tooltip have icons and others do not,
  heightening the inconsistency.
  
  Since either case is undesirable, let's just remove the icon from the tooltip
  entirely. This reduces the visual noise in the tooltip and solves the entire
  class of bugs automatically.

TEST PLAN
  F8150018: App launcher.png <https://phabricator.kde.org/F8150018> 
  F8150021: Icon-less tooltips.webm <https://phabricator.kde.org/F8150021>

REPOSITORY
  R119 Plasma Desktop

BRANCH
  remove-tooltip-icon (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D27847

AFFECTED FILES
  applets/taskmanager/package/contents/ui/ToolTipInstance.qml

To: ngraham, #vdg, #plasma
Cc: plasma-devel, Orage, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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