MDEV-18425: wsrep.mdev_10186: Test failure: "Result length mismatch" (@@GLOBAL.wsrep_provider)

Remove unnecessary select of provider name as it could be anything
and be located on different directories (i.e. it full name could
be different).

mysql-test/suite/wsrep/r/mdev_10186.result

@@ -5,7 +5,4 @@
 SELECT @@wsrep_on;
 @@wsrep_on
 0
-SELECT @@GLOBAL.wsrep_provider;
-@@GLOBAL.wsrep_provider
-libgalera_smm.so
 SET @@GLOBAL.wsrep_cluster_address='gcomm://';

mysql-test/suite/wsrep/t/mdev_10186.test

@@ -8,7 +8,5 @@
 --echo #
 
 SELECT @@wsrep_on;
---replace_regex /.*libgalera_smm.so/libgalera_smm.so/
-SELECT @@GLOBAL.wsrep_provider;
 SET @@GLOBAL.wsrep_cluster_address='gcomm://';