Revert "appveyor: try building with InnoDB as dynamic plugin"
Revert "appveyor: try building with InnoDB as dynamic plugin"

This reverts commit 1a4290505195e372986d23e4a33c4a9d986bdc3b.

Because MariaDB can't build InnoDB as dynamic plugin on Windows.
InnoDB uses not exported symbols.

mroonga/mroonga,mroonga/mroonga,mroonga/mroonga,mroonga/mroonga