configure: remove xkbcommon_evdev transition hack

It was added in c3a963da1f.
wayland was updated in a8fed20181729cae70de43079c4a34ad1780cfd7.

Change-Id: Ibf458815c3b61c5f936f147086db3d2b5782c175
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

src/gui/configure.json

@@ -618,16 +618,6 @@
                 { "type": "pkgConfig", "args": "xkbcommon-x11" }
             ]
         },
-        "xkbcommon_evdev": {
-            "label": "xkbcommon_evdev TRANSITION HACK",
-            "test": {
-                "include": [ "xkbcommon/xkbcommon.h" ],
-                "main": "xkb_context_new(XKB_CONTEXT_NO_FLAGS);"
-            },
-            "sources": [
-                { "type": "pkgConfig", "args": "xkbcommon >= 0.5.0" }
-            ]
-        },
         "xrender": {
             "label": "XRender for native painting",
             "test": "x11/xrender",
@@ -1378,11 +1368,6 @@
             "condition": "libs.xkbcommon",
             "output": [ "privateFeature" ]
         },
-        "xkbcommon-evdev": {
-            "label": "xkbcommon-evdev TRANSITION HACK",
-            "condition": "libs.xkbcommon_evdev",
-            "output": [ "privateFeature" ]
-        },
         "xlib": {
             "label": "XLib",
             "autoDetect": "!config.darwin || features.xcb",