wheel: reduce the size of Linux and macOS wheels

Wheels make copies of files instead of storing symlinks. Drop the
information in wheels to save space since they're not really reusable as
SDKs anyways.

CMakeLists.txt

@@ -355,6 +355,13 @@ if (VTK_CUSTOM_LIBRARY_SUFFIX STREQUAL "<DEFAULT>")
   endif ()
 endif ()
 
+set(vtk_library_version_info
+  VERSION             "${VTK_VERSION}"
+  SOVERSION           "1")
+if (VTK_WHEEL_BUILD)
+  set(vtk_library_version_info)
+endif ()
+
 vtk_module_build(
   MODULES             ${vtk_modules}
   KITS                ${vtk_kits}
@@ -365,8 +372,7 @@ vtk_module_build(
   CMAKE_DESTINATION   "${vtk_cmake_destination}"
   LICENSE_DESTINATION "${CMAKE_INSTALL_LICENSEDIR}"
   LIBRARY_NAME_SUFFIX "${VTK_CUSTOM_LIBRARY_SUFFIX}"
-  VERSION             "${VTK_VERSION}"
-  SOVERSION           "1"
+  ${vtk_library_version_info}
   TEST_DATA_TARGET    VTKData
   INSTALL_HEADERS     "${VTK_INSTALL_SDK}"
   BUILD_WITH_KITS     "${VTK_ENABLE_KITS}"