Add PNG and wxWidgets 3.1.3 uniformly to all platforms with cmake build.

wx is built with png as a dependency, wxpng is disabled.

deps/deps-macos.cmake

@@ -86,30 +86,4 @@ ExternalProject_Add(dep_libcurl
     INSTALL_COMMAND make install "DESTDIR=${DESTDIR}"
 )
 
-ExternalProject_Add(dep_wxwidgets
-    EXCLUDE_FROM_ALL 1
-    GIT_REPOSITORY "https://github.com/prusa3d/wxWidgets"
-    GIT_TAG v3.1.3-patched
-    BUILD_IN_SOURCE 1
-#    PATCH_COMMAND "${CMAKE_COMMAND}" -E copy "${CMAKE_CURRENT_SOURCE_DIR}/wxwidgets-pngprefix.h" src/png/pngprefix.h
-    CONFIGURE_COMMAND env "CXXFLAGS=${DEP_WERRORS_SDK}" "CFLAGS=${DEP_WERRORS_SDK}" ./configure
-        "--prefix=${DESTDIR}/usr/local"
-        --disable-shared
-        --with-osx_cocoa
-        --with-macosx-sdk=${CMAKE_OSX_SYSROOT}
-        "--with-macosx-version-min=${DEP_OSX_TARGET}"
-        --with-opengl
-        --with-regex=builtin
-        --with-libpng=builtin
-        --with-libxpm=builtin
-        --with-libjpeg=builtin
-        --with-libtiff=builtin
-        --with-zlib
-        --with-expat=builtin
-        --disable-debug
-        --disable-debug_flag
-    BUILD_COMMAND make "-j${NPROC}" && PATH=/usr/local/opt/gettext/bin/:$ENV{PATH} make -C locale allmo
-    INSTALL_COMMAND make install
-)
-
 add_dependencies(dep_openvdb dep_boost)