Remove arcconfig and arclint

.arcconfig

-{
-  "phabricator.uri" : "https://phabricator.kde.org/project/profile/159/"
-}

.arclint

-{
-  "exclude": "(^test/)",
-  "linters": {
-    "spelling": {
-      "type": "spelling"
-    },
-    "merge-conflict": {
-      "type": "merge-conflict"
-    },
-    "json": {
-      "type": "json",
-      "include": "(\\.json$)"
-    },
-    "cppcheck": {
-      "type": "cppcheck",
-      "include": "(\\.(cpp|h|cxx|hpp)$)",
-      "flags": ["--language=c++", "--std=c++11"]
-    }
-  }
-}