Remove disabled extend.

[reitermarkus]

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This is disabled on any platform regardless.

[MikeMcQuaid]

Normally would wait around to remove this but: it's a private API anyway.

[MikeMcQuaid]

Thanks again @reitermarkus!

[reitermarkus]

It's still odisabled in Tap unconditionally.

[MikeMcQuaid]

It's still odisabled in Tap unconditionally.

Ah, nice, great 👍🏻