remove unused imports

src/components/Form/Checkbox.tsx

@@ -1,9 +1,8 @@
 import React, { ChangeEventHandler, FunctionComponent } from 'react';
-import PropTypes from 'prop-types';
 import styled, { css } from 'styled-components';
 import theme from 'styled-theming';
 import useWhatInput from 'react-use-what-input';
-import { BLACK, BLUE, LIGHT_BLUE, RED, SKY, STEEL, WHITE } from 'Constant/colors';
+import { BLACK, BLUE, RED, SKY, STEEL, WHITE } from 'Constant/colors';
 import { Sprite } from 'components/Sprite';
 
 // const fontColor = theme('mode', {

src/components/KeyManagement/DisplayPrivateKeysModal.tsx

@@ -1,7 +1,7 @@
-import React, { FunctionComponent, useCallback, useEffect, useState } from 'react';
+import React, { FunctionComponent, useCallback, useState } from 'react';
 import { Modal } from 'components/Modal';
 import { ContractKey } from 'models/keys';
-import { H3, H4, H5 } from 'components/Text';
+import { H5 } from 'components/Text';
 import { HorizontalTable, HorizontalTableRow } from 'components/Table';
 import { Card, CardHeader } from 'components/Card';
 import { Button, ButtonGroup } from 'components/Button';