fix: Remove unused code and imports

Author: tiithansen

src/components/AlertsTable/index.tsx

@@ -8,7 +8,7 @@ import {
     VariableValueSelectors,
     SceneVariables,
 } from '@grafana/scenes';
-import { createNamespaceVariable, resolveVariable } from 'common/variableHelpers';
+import { createNamespaceVariable } from 'common/variableHelpers';
 import { SortingState } from 'common/sortingHelpers';
 import { AsyncTable, Column, ColumnSortingConfig, QueryBuilder } from 'components/AsyncTable';
 import { TextColor } from 'common/types';
@@ -17,8 +17,6 @@ import { alertLabelValues } from './utils';
 import { expandedRowSceneBuilder } from './AlertExpandedRow';
 import { LabelFilters, serializeLabelFilters } from 'common/queryHelpers';
 
-const KNOWN_SEVERITIES = ['critical', 'high', 'warning', 'info'];
-
 interface SeverityColors {
     [key: string]: TextColor;
 }
@@ -134,8 +132,6 @@ const columns: Array<Column<TableRow>> = [
     }
 ]
 
-const serieMatcherPredicate = (row: TableRow) => (value: any) => value.alertname === row.alertname;
-
 function rowMapper(row: TableRow, asyncRowData: any) {
 
 }