Remove colors from feature gate table

Colorization was originally based on "is there enough tests" (e.g. at
least 5), but it is being mistaken as "this feature gate is passing
tests and is good."

This removes the colors.

sippy-ng/src/tests/FeatureGates.js

@@ -1,11 +1,8 @@
 import { Container, Typography } from '@mui/material'
 import { DataGrid } from '@mui/x-data-grid'
-import { FEATURE_GATE_TEST_THRESHOLDS } from '../constants'
-import { generateClasses } from '../datagrid/utils'
 import { Link, useHistory } from 'react-router-dom'
 import { pathForTestSubstringByVariant, SafeJSONParam } from '../helpers'
 import { useQueryParam, withDefault } from 'use-query-params'
-import { withStyles } from '@mui/styles'
 import Alert from '@mui/material/Alert'
 import GridToolbar from '../datagrid/GridToolbar'
 import PropTypes from 'prop-types'
@@ -15,7 +12,7 @@ import SimpleBreadcrumbs from '../components/SimpleBreadcrumbs'
 /**
  * Feature gates is the landing page for feature gates.
  */
-function FeatureGates(props) {
+export default function FeatureGates(props) {
   const history = useHistory()
 
   const { classes } = props
@@ -134,9 +131,6 @@ function FeatureGates(props) {
             columns={columns}
             pageSize={25}
             autoHeight={true}
-            getRowClassName={(params) =>
-              classes['row-percent-' + Math.round(params.row.unique_test_count)]
-            }
             rowsPerPageOptions={[10, 25, 50]}
             sortModel={sortModel} // Controlled sortModel
             onSortModelChange={(newModel) => setSortModel(newModel)}
@@ -170,7 +164,3 @@ FeatureGates.propTypes = {
   classes: PropTypes.object,
   release: PropTypes.string.isRequired,
 }
-
-export default withStyles(generateClasses(FEATURE_GATE_TEST_THRESHOLDS))(
-  FeatureGates
-)