[ML] Remove deprecated angularjs directives. (elastic#28564)

* [ML] Remove deprecated show-charts directive.
* [ML] Remove deprecated ml-controls-select directive.
* [ML] Remove deprecated SCSS import.

x-pack/plugins/ml/public/components/controls/_index.scss

@@ -1,3 +1,2 @@
 @import 'controls';
-@import 'controls_select/index';
-@import 'select_severity/index';
+@import 'select_severity/index';

x-pack/plugins/ml/public/components/controls/checkbox_showcharts/checkbox_showcharts_directive.js → x-pack/plugins/ml/public/components/controls/checkbox_showcharts/checkbox_showcharts_service.js

@@ -12,21 +12,12 @@ import { stateFactoryProvider } from 'plugins/ml/factories/state_factory';
 import { uiModules } from 'ui/modules';
 const module = uiModules.get('apps/ml', ['react']);
 
-import { CheckboxShowCharts, mlCheckboxShowChartsService } from './checkbox_showcharts';
+import { mlCheckboxShowChartsService } from './checkbox_showcharts';
 
 module.service('mlCheckboxShowChartsService', function (Private) {
  const stateFactory = Private(stateFactoryProvider);
  this.state = mlCheckboxShowChartsService.state = stateFactory('mlCheckboxShowCharts', {
  showCharts: true
  });
  mlCheckboxShowChartsService.initialized = true;
-})
- .directive('mlCheckboxShowCharts', function ($injector) {
- const reactDirective = $injector.get('reactDirective');
-
- return reactDirective(
- CheckboxShowCharts,
- undefined,
- { restrict: 'E' },
- );
- });
+});

x-pack/plugins/ml/public/components/controls/checkbox_showcharts/index.js

@@ -5,4 +5,4 @@
  */
 
 
-import './checkbox_showcharts_directive';
+import './checkbox_showcharts_service';

x-pack/plugins/ml/public/components/controls/index.js

@@ -7,6 +7,5 @@
 
 
 import './checkbox_showcharts';
-import './controls_select';
 import './select_interval';
 import './select_severity';