emulators/wine-devel: Set USE_LDCONFIG unconditionally

Since removing emulators/i386-wine-devel with commit 99af2239fc in
2021 we don't need to account for USE_LDCONFIG32 coming from that
port any longer and can set USE_LDCONFIG unconditionally.

Also streamline the overall logic down to one line.

This matches 904382ada0af for emulators/wine.

Approved by: Thibault Payet <monwarez@mailoo.org> (maintainer)