qt58.qtbase: remove D-Bus library paths patch

Qt is configured with `-dbus-linked` which causes the library paths to be
resolved at compile time and added to RPATH.

pkgs/development/libraries/qt-5/5.8/qtbase/default.nix

@@ -234,9 +234,6 @@ stdenv.mkDerivation {
       ''-DNIXPKGS_QTCOMPOSE="${libX11.out}/share/X11/locale"''
       ''-DNIXPKGS_LIBRESOLV="${stdenv.cc.libc.out}/lib/libresolv"''
       ''-DNIXPKGS_LIBXCURSOR="${libXcursor.out}/lib/libXcursor"''
-      (if stdenv.isLinux
-        then ''-DNIXPKGS_LIBDBUS="${dbus.lib}/lib/libdbus-1"''
-        else ''-DNIXPKGS_LIBDBUS=""'')
     ]
 
     ++ lib.optional mesaSupported

pkgs/development/libraries/qt-5/5.8/qtbase/dlopen-dbus.patch

@@ -1,13 +0,0 @@
-Index: qtbase-opensource-src-5.8.0/src/dbus/qdbus_symbols.cpp
-===================================================================
---- qtbase-opensource-src-5.8.0.orig/src/dbus/qdbus_symbols.cpp
-+++ qtbase-opensource-src-5.8.0/src/dbus/qdbus_symbols.cpp
-@@ -97,7 +97,7 @@ bool qdbus_loadLibDBus()
- #ifdef Q_OS_WIN
-         QLatin1String("dbus-1"),
- #endif
--        QLatin1String("libdbus-1")
-+        QLatin1String("@dbus_libs@/lib/libdbus-1")
-     };
- 
-     lib->unload();

pkgs/development/libraries/qt-5/5.8/qtbase/series

@@ -1,7 +1,6 @@
 dlopen-resolv.patch
 tzdir.patch
 dlopen-libXcursor.patch
-dlopen-dbus.patch
 xdg-config-dirs.patch
 compose-search-path.patch
 libressl.patch