wayland: fix static build

In commit f64b0ef6cfabd523bdf135c9eb0f553b11e95683 a crude patch was introduced
to disable a test on static builds, due to it failing to link with multiple
definition errors. The patch now leads to a syntax error due to changed
formatting upstream, and the linker failure does not happen any more. Remove
patch.

pkgs/development/libraries/wayland/default.nix

@@ -36,14 +36,8 @@ stdenv.mkDerivation (finalAttrs: {
     ./darwin.patch
   ];
 
-  postPatch =
+  postPatch = lib.optionalString withDocumentation ''
-    lib.optionalString withDocumentation ''
     patchShebangs doc/doxygen/gen-doxygen.py
-    ''
-    + lib.optionalString stdenv.hostPlatform.isStatic ''
-      # delete line containing os-wrappers-test, disables
-      # the building of os-wrappers-test
-      sed -i '/os-wrappers-test/d' tests/meson.build
   '';
 
   outputs = [