Revert "lib.ucd: supporting Unicode database for lib.xsd_regexp"
Revert "lib.ucd: supporting Unicode database for lib.xsd_regexp"

This reverts commit 76acfd3d8e4db2e2b3e745da577c56cf3f3cf517.

Igalia/snabb,dpino/snabb,eugeneia/snabb,SnabbCo/snabbswitch,eugeneia/snabb,dpino/snabbswitch,dpino/snabbswitch,snabbco/snabb,SnabbCo/snabbswitch,Igalia/snabbswitch,alexandergall/snabbswitch,Igalia/snabb,Igalia/snabb,eugeneia/snabb,snabbco/snabb,eugeneia/snabb,alexandergall/snabbswitch,snabbco/snabb,SnabbCo/snabbswitch,eugeneia/snabbswitch,snabbco/snabb,dpino/snabb,Igalia/snabbswitch,Igalia/snabbswitch,alexandergall/snabbswitch,eugeneia/snabb,eugeneia/snabbswitch,alexandergall/snabbswitch,dpino/snabbswitch,eugeneia/snabb,Igalia/snabb,alexandergall/snabbswitch,snabbco/snabb,snabbco/snabb,snabbco/snabb,dpino/snabb,dpino/snabb,Igalia/snabb,dpino/snabb,Igalia/snabbswitch,eugeneia/snabb,eugeneia/snabbswitch,alexandergall/snabbswitch,dpino/snabbswitch,Igalia/snabb,Igalia/snabb,snabbco/snabb,SnabbCo/snabbswitch,dpino/snabb,Igalia/snabbswitch,eugeneia/snabbswitch,dpino/snabb,alexandergall/snabbswitch,eugeneia/snabb,alexandergall/snabbswitch,Igalia/snabb