Remove unused grantlee

.kde-ci.yml

@@ -5,7 +5,6 @@ Dependencies:
 - 'on': ['@all']
   'require':
     'frameworks/extra-cmake-modules': '@latest'
-    'third-party/grantlee' : '@stable'
     'frameworks/kdesignerplugin' : '@latest'
     'frameworks/kcontacts' : '@latest'
     'kde/pim/akonadi' : '@same'