chore: update react imports

Signed-off-by: Paul Schultz <pschultz@pobox.com>

plugins/org-react/README.md

@@ -12,7 +12,7 @@ To use the `GroupListPicker` component you'll need to import it and add it to yo
 
 ```diff
 + import { GroupListPicker } from '@backstage/plugin-org-react';
-+ import React, { useState } from 'react';
++ import { useState } from 'react';
 
 + const [group, setGroup] = useState<GroupEntity | undefined>();
 

plugins/org-react/src/components/GroupListPicker/GroupListPicker.test.tsx

@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-import React from 'react';
 import { render, waitFor } from '@testing-library/react';
 import userEvent from '@testing-library/user-event';
 import { ApiProvider } from '@backstage/core-app-api';

plugins/org-react/src/components/GroupListPicker/GroupListPicker.tsx

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import React, { useCallback } from 'react';
+import { MouseEvent, useState, useCallback } from 'react';
 import {
   catalogApiRef,
   humanizeEntityRef,
@@ -45,10 +45,10 @@ export const GroupListPicker = (props: GroupListPickerProps) => {
   const catalogApi = useApi(catalogApiRef);
 
   const { onChange, groupTypes, placeholder = '', defaultValue = '' } = props;
-  const [anchorEl, setAnchorEl] = React.useState<HTMLElement | null>(null);
-  const [inputValue, setInputValue] = React.useState(defaultValue);
+  const [anchorEl, setAnchorEl] = useState<HTMLElement | null>(null);
+  const [inputValue, setInputValue] = useState(defaultValue);
 
-  const handleClick = (event: React.MouseEvent<HTMLElement>) => {
+  const handleClick = (event: MouseEvent<HTMLElement>) => {
     setAnchorEl(event.currentTarget);
   };
 

plugins/org-react/src/components/GroupListPicker/GroupListPickerButton.tsx

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import React from 'react';
+import { MouseEvent } from 'react';
 import Typography from '@material-ui/core/Typography';
 import Button from '@material-ui/core/Button';
 import { makeStyles } from '@material-ui/core/styles';
@@ -46,7 +46,7 @@ const useStyles = makeStyles(theme => ({
 }));
 
 type GroupListPickerButtonProps = {
-  handleClick: (event: React.MouseEvent<HTMLElement>) => void;
+  handleClick: (event: MouseEvent<HTMLElement>) => void;
   group: string | undefined;
 };