Remove a now unneeded unimatch multi
Remove a now unneeded unimatch multi

This follows up MoarVM/MoarVM#448 resolution.

The remove multi was added to make
S15-unicode-information/unimatch-general.t passes. It now passes
without it.

MasterDuke17/rakudo,rakudo/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,rakudo/rakudo,MasterDuke17/rakudo,labster/rakudo,rakudo/rakudo,tony-o/rakudo,MasterDuke17/rakudo,salortiz/rakudo,labster/rakudo,tony-o/rakudo,tbrowder/rakudo,labster/rakudo,salortiz/rakudo,salortiz/rakudo,salortiz/rakudo,tbrowder/rakudo,labster/rakudo,tbrowder/rakudo,salortiz/rakudo,salortiz/rakudo,rakudo/rakudo,MasterDuke17/rakudo,tony-o/rakudo,labster/rakudo,rakudo/rakudo,tony-o/rakudo,rakudo/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,tony-o/rakudo,labster/rakudo,tony-o/rakudo,tbrowder/rakudo