remove gksu dependency

https://code.launchpad.net/~bzoltan/qtcreator-plugin-ubuntu/removed_gksu/+merge/204156

This bug was fixed in the package qtcreator-plugin-ubuntu - 2.8.1.2-0ubuntu1

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qtcreator-plugin-ubuntu (2.8.1.2-0ubuntu1) trusty; urgency=medium

  [Benjamin Zeller]
  * Enable Publish tab if the click-review tools are installed
  * Show detailed information about a error under the validation treeview
  * Install cmake to the click chroots
  * Packaging tab is renamed to Publish
  * Parser for click-run-checks output and show results in a itemview
  * Fix run on device for cmake projects
  * New cmake project template
  * cmake project deployment to the device
  * Automatically validate click packages created from CMake projects
  * Build click package for cmake projects
  * The menu.json parser is refactored to show menus only in a special context
  * New option to menu.json if a clicktarget is required for executing the action
  * Tweaking build files to allow local build.
  * Do not ship a comment in the desktop file, because manifest should take precedence
  * The manifest desciption always takes precedence over the desktop file (LP: #1264404)
  * Read script output with QString::fromLocal8Bit instead of fromLatin1 (LP: #1211169)
  * Added cmake build and maintenance support for click chroots

  [Alexandre Abreu]
  * HTML5 app deployment on device is fixed
  * Fixed HTML5 template to have a cleaner example of tabs implementation
  * Updated HTML5 tab structure

  [David Barth]
  * Tool to download a pre-compiled cordova runtime (LP: #1277667)

  [Zoltan Balogh]
  * Emulator features rebased on ubuntu-emulator
  * Remove forced update of the maintainer in the manifest.json (LP: #1274265)
  * Removed gksu from the dependency list (LP: #1235531)
  * The click package reviewing tool is executed on the click package created in the Packaging tab.
  * Enable scope templates on Trusty (LP: #1263593)
 -- Zoltan Balogh <email address hidden> Thu, 13 Feb 2014 11:50:52 +0200