Remove cppcheck from kwayland

Summary: Like we did on kwin, it doesn't work.

Test Plan: This very patch

Reviewers: #frameworks, davidedmundson

Reviewed By: davidedmundson

Subscribers: kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D28309

src/wayland/.arclint

@@ -10,11 +10,6 @@
     "xml": {
       "type": "xml",
       "include": "(\\.xml$)"
-    },
-    "cppcheck": {
-      "type": "cppcheck",
-      "include": "(\\.(cpp|h|cxx|hpp)$)",
-      "flags": ["--language=c++", "--std=c++11"]
     }
   }
 }