emulators/wine-devel: Account for further bundled libs

Since version 6.20 Wine bundles and unconditionally uses copies of
the gsm, jxr, tiff and xslt libraries.

Accordingly, the --without-gsm, --without-jxrlib, and --without-tiff
configure options we have been using became no-ops, so remove those.

Also remove the LIBXSLT option, which was off by default before that
bundling, and associated logic.

(None of these simplifications should change generated packages.)

Approved by:	maintainer (pre-approval)