remove redundant typedef

Change-Id: I00cb289de0e75cb663f0a4fba0a9a5dc820e368b
Reviewed-on: https://gerrit.libreoffice.org/67246
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

include/vcl/errinf.hxx

@@ -97,12 +97,6 @@ namespace o3tl
     template<> struct typed_flags<DialogMask> : is_typed_flags<DialogMask, 0xffff> {};
 }
 
-typedef DialogMask WindowDisplayErrorFunc(
-    weld::Window*, DialogMask nMask, const OUString &rErr, const OUString &rAction);
-
-typedef void BasicDisplayErrorFunc(
-    const OUString &rErr, const OUString &rAction);
-
 class SAL_WARN_UNUSED VCL_DLLPUBLIC ErrorHandler
 {
     friend class ErrorStringFactory;