remove unneeded cmake switch

CMakeLists.txt

@@ -192,7 +192,6 @@ endif(MSVC)
 
 # Switch to build FreeCAD with Qt5
 OPTION(BUILD_QT5 "Build with Qt5." OFF)
-OPTION(BUILD_QT5_WEBKIT "Build with Qt5." ON)
 OPTION(BUILD_GUI "Build FreeCAD Gui. Otherwise you have only the command line and the Python import module." ON)
 OPTION(FREECAD_MAINTAINERS_BUILD "Build FreeCAD for Maintainers, with Docu and 3rd party libs. On Windows the Installer is built." OFF)
 OPTION(FREECAD_USE_EXTERNAL_ZIPIOS "Use system installed zipios++ instead of the bundled." OFF)
@@ -843,7 +842,7 @@ endif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
             find_package(Qt5UiTools)
             find_package(Qt5Network)
             find_package(Qt5Concurrent)
-            if (BUILD_QT5_WEBKIT)
+            if (BUILD_WEB)
                 find_package(Qt5WebKitWidgets)
             endif()
         endif(BUILD_GUI)