remove db xray link on overworld (#8183)

frontend/src/metabase/containers/Overworld.jsx

@@ -212,7 +212,11 @@ class Overworld extends React.Component {
                             database.engine
                           }`}
                         >
-                          <Box p={3} bg={colors["bg-medium"]}>
+                          <Box
+                            p={3}
+                            bg={colors["bg-medium"]}
+                            className="hover-parent hover--visibility"
+                          >
                             <Icon
                               name="database"
                               color={normal.purple}
@@ -223,16 +227,6 @@ class Overworld extends React.Component {
                               <h3>{database.name}</h3>
                               <Box ml="auto" mr={1} className="hover-child">
                                 <Flex align="center">
-                                  <Tooltip tooltip={t`X-ray this table`}>
-                                    <Link to={`explore/${database.id}/`}>
-                                      <Icon
-                                        name="bolt"
-                                        mx={1}
-                                        color={normal.yellow}
-                                        size={20}
-                                      />
-                                    </Link>
-                                  </Tooltip>
                                   <Tooltip tooltip={t`Learn about this table`}>
                                     <Link
                                       to={`reference/databases/${database.id}`}