Remove VT family "Local Security Checks: EulerOS"

The family ended up being unused while existing VTs use the family
"Huawei EulerOS Local Security Checks", so it is removed from the
list of LSC families.
This effectively reverts #1381.

CHANGELOG.md

@@ -24,7 +24,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Change SCAP and CERT data to use "severity" consistently [#1333](https://github.com/greenbone/gvmd/pull/1333) [#1357](https://github.com/greenbone/gvmd/pull/1357) [#1365](https://github.com/greenbone/gvmd/pull/1365) [#1457](https://github.com/greenbone/gvmd/pull/1457) [#1476](https://github.com/greenbone/gvmd/pull/1476)
 - Expect report format scripts to exit with code 0 [#1383](https://github.com/greenbone/gvmd/pull/1383)
 - Send entire families to ospd-openvas using VT_GROUP [#1384](https://github.com/greenbone/gvmd/pull/1384)
-- The internal list of current Local Security Checks for the 'Closed CVEs' feature was updated [#1381](https://github.com/greenbone/gvmd/pull/1381)
 - Limit "whole-only" config families to "growing" and "every nvt" [#1386](https://github.com/greenbone/gvmd/pull/1386)
 - Access current user with an SQL function [#1399](https://github.com/greenbone/gvmd/pull/1399)
 - Refactor modify_config, allowing multiple simultaneous changes [#1404](https://github.com/greenbone/gvmd/pull/1404)

src/manage.h

@@ -1085,7 +1085,6 @@ user_has_super (const char *, user_t);
   " 'HP-UX Local Security Checks',"                \
   " 'Huawei EulerOS Local Security Checks',"       \
   " 'JunOS Local Security Checks',"                \
-  " 'Local Security Checks: EulerOS',"             \
   " 'Mac OS X Local Security Checks',"             \
   " 'Mageia Linux Local Security Checks',"         \
   " 'Mandrake Local Security Checks',"             \