Revert "Add webshims for IE8"

This reverts commit 6af0e45f0d3e16f3c7e64b8c54a06c5b65b48fd4.
Revert "Add webshims for IE8"

This reverts commit adeeda49d3a5519a1d906b51d3baa52864e24f40.
Revert "Add webshims for IE8"

This reverts commit 16004b687ba564fe65483f3ca5964f538e3eae26.
Revert "Add webshims for IE8"

This reverts commit 50620f0f8efcb321b02a2c7f9db70095eb149c93.
Revert "Add webshims for IE8"

This reverts commit 0c016d50a8c450ac150ef73370c1c44e6bfed8f6.
Finish getting rid of webshims and related dependencies