Remove dashboard leftovers (openhab#181)

* Remove dashboard leftover
* Remove dashboard from CODEOWNERS file

Signed-off-by: Wouter Born <[email protected]>

Author: wborn

CODEOWNERS

@@ -9,7 +9,6 @@
 /bundles/org.openhab.ui.basic/ @lolodomo @resetnow
 /bundles/org.openhab.ui.cometvisu/ @peuter
 /bundles/org.openhab.ui.cometvisu.php/ @peuter
-/bundles/org.openhab.ui.dashboard/ @kaikreuzer
 /bundles/org.openhab.ui.habot/ @ghys
 /bundles/org.openhab.ui.habpanel/ @ghys
 /bundles/org.openhab.ui.homebuilder/ @kubawolanin