Revert "Qt 5.12 and VS2017 on Windows for CI"
Revert "Qt 5.12 and VS2017 on Windows for CI"

This reverts commit ae70c6e28e058b8c112339bca2e2fd0feea4720a.

tamlok/vnote,tamlok/vnote,tamlok/vnote,tamlok/vnote,tamlok/vnote