Remove Wikipedia:Teahouse/Questions/Flow_test from enwiki Flow pages

Follows-up Ib0aaa60f09.

per MFD,
https://en.wikipedia.org/wiki/Wikipedia:Miscellany_for_deletion/Wikipedia:Teahouse/Questions/Flow_test

Change-Id: I158e7c6852784def720d690381aea1aca81d23f4