[HEALTCHECK] remove mariadbgalera connectivity tests from core

it was mentioned in the patch review but not takent into account
using core tag leads to errors in core [1]
because the xtesting HC docker does not include kubecl, which is needed by the new tests

Issue-ID: SO-3829

[1]: https://logs.onap.org/onap-integration/daily/onap_daily_pod4_master/2022-01/21_01-42/xtesting-healthcheck/core/core/report.html#totals?all

Signed-off-by: morganrol <morgan.richomme@orange.com>
Change-Id: I1d8e93dec80ecdfa0cdcabaefb961f77f0654849
diff --git a/robot/testsuites/health-check.robot b/robot/testsuites/health-check.robot
index 6ebf5bd..a6666ff 100644
--- a/robot/testsuites/health-check.robot
+++ b/robot/testsuites/health-check.robot
@@ -343,9 +343,9 @@
     Run CDS Delete CBA Health Check
 
 Mariadb Galera Pod Connectivity Test
-    [Tags]    core    health-mariadb-galera
+    [Tags]    health-mariadb-galera
     Check for Mariadb Galera Pod Connection
 
 Mariadb Galera SO Connectivity Test
-    [Tags]    core    health-mariadb-galera
+    [Tags]    health-mariadb-galera
     Check for SO Databases Connection