Drop unused X11 dependency

Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

CMakeLists.txt

@@ -47,12 +47,8 @@ if(Qt5WebEngineWidgets_VERSION VERSION_LESS "5.14.0")
   add_definitions(-DWEBENGINEDOWNLOADITEM_USE_PATH)
 endif()
 
-find_package(X11)
-set(KONQ_HAVE_X11 ${X11_FOUND})
-
-if (X11_FOUND)
-  find_package(Qt5 REQUIRED X11Extras)
-endif(X11_FOUND)
+find_package(Qt5X11Extras)
+set(KONQ_HAVE_X11 ${Qt5X11Extras_FOUND})
 
 add_definitions(
     -DQT_USE_QSTRINGBUILDER

src/CMakeLists.txt

@@ -113,10 +113,6 @@ target_link_libraries(kdeinit_konqueror
    KF5::SonnetUi
 )
 
-if (X11_FOUND)
-  target_link_libraries(kdeinit_konqueror ${X11_LIBRARIES})
-endif ()
-
 if (KActivities_FOUND)
   target_link_libraries(kdeinit_konqueror KF5::Activities)
 endif (KActivities_FOUND)