Remove all internal usage of the Json types

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/config-schema/src/components/SchemaView/ChildView.tsx

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { JsonValue } from '@backstage/config';
+import { JsonValue } from '@backstage/types';
 import { Box, Chip, Divider, makeStyles, Typography } from '@material-ui/core';
 import { Schema } from 'jsonschema';
 import React, { useEffect, useRef } from 'react';

plugins/config-schema/src/components/SchemaView/MetadataView.tsx

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { JsonValue } from '@backstage/config';
+import { JsonValue } from '@backstage/types';
 import {
   Paper,
   Table,