Core/DBLayer: Change some incorrect uses of PQuery with PExecute or Execute

src/server/game/Groups/Group.cpp

@@ -203,7 +203,9 @@ void Group::LoadMemberFromDB(uint32 guidLow, uint8 memberFlags, uint8 subgroup,
     // skip non-existed member
     if (!sObjectMgr->GetPlayerNameByGUID(member.guid, member.name))
     {
-        CharacterDatabase.PQuery("DELETE FROM group_member WHERE memberGuid=%u", guidLow);
+        PreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_DEL_GROUP_MEMBER);
+        stmt->setUInt32(0, guidLow);
+        CharacterDatabase.Execute(stmt);
         return;
     }