Remove _wx_opengl_override from wxWidgets dep cmake

wxWidgets 3.3 handles OpenGL discovery natively via imported targets
(OpenGL::GL, OpenGL::OpenGL). The override was corrupting wx-config
output with malformed "-framework OpenGL" entries, causing
FindwxWidgets.cmake to fail.

deps/wxWidgets/wxWidgets.cmake

@@ -21,14 +21,6 @@ else ()
     set(_wx_edge "-DwxUSE_WEBVIEW_EDGE=OFF")
 endif ()
 
-set(_wx_opengl_override "")
-if(APPLE AND CMAKE_VERSION VERSION_GREATER_EQUAL "4.0")
-    set(_wx_opengl_override
-        -DOPENGL_gl_LIBRARY="-framework OpenGL"
-        -DOPENGL_glu_LIBRARY="-framework OpenGL"
-    )
-endif()
-
 orcaslicer_add_cmake_project(
     wxWidgets
     GIT_REPOSITORY "https://github.com/SoftFever/Orca-deps-wxWidgets"
@@ -36,7 +28,6 @@ orcaslicer_add_cmake_project(
     GIT_SHALLOW ON
     DEPENDS ${PNG_PKG} ${ZLIB_PKG} ${EXPAT_PKG} ${JPEG_PKG}
     CMAKE_ARGS
-        ${_wx_opengl_override}
         -DwxBUILD_PRECOMP=ON
         ${_wx_toolkit}
         "-DCMAKE_DEBUG_POSTFIX:STRING=${_wx_debug_postfix}"