fix(@schematics/angular): remove IE9/10 from browserslist for new projects

BREAKING CHANGE:
Deprecated support for IE 9-10 has been removed in Angular 11.
Only IE 9-10 support has been removed. IE 11 is officially supported in Angular 11.
Additional information can be found here: https://v10.angular.io/guide/deprecations#ie-9-10-and-mobile

Author: clydin

packages/schematics/angular/application/files/.browserslistrc.template

@@ -14,7 +14,5 @@ last 2 Edge major versions
 last 2 Safari major versions
 last 2 iOS major versions
 Firefox ESR<% if (legacyBrowsers) { %>
-IE 9-10 # Angular support for IE 9-10 has been deprecated and will be removed as of Angular v11.
 IE 11<% } else { %>
-not IE 9-10 # Angular support for IE 9-10 has been deprecated and will be removed as of Angular v11. To opt-in, remove the 'not' prefix on this line.
 not IE 11 # Angular supports IE 11 only as an opt-in. To opt-in, remove the 'not' prefix on this line.<% } %>

packages/schematics/angular/application/index_spec.ts

@@ -431,25 +431,21 @@ describe('Application Schematic', () => {
     });
   });
 
-  it(`should add support for IE 9-11 in '.browserslistrc' when 'legacyBrowsers' is true`, async () => {
+  it(`should add support for IE 11 in '.browserslistrc' when 'legacyBrowsers' is true`, async () => {
     const options: ApplicationOptions = { ...defaultOptions, legacyBrowsers: true };
     const tree = await schematicRunner.runSchematicAsync('application', options, workspaceTree)
       .toPromise();
     const content = tree.readContent('/projects/foo/.browserslistrc');
     expect(content).not.toContain('not IE 11');
     expect(content).toContain('IE 11');
-
-    expect(content).not.toContain('not IE 9-10');
-    expect(content).toContain('IE 9-10');
   });
 
-  it(`should not add support for IE 9-11 in '.browserslistrc' when 'legacyBrowsers' is false`, async () => {
+  it(`should not add support for IE 11 in '.browserslistrc' when 'legacyBrowsers' is false`, async () => {
     const options: ApplicationOptions = { ...defaultOptions, legacyBrowsers: false };
     const tree = await schematicRunner.runSchematicAsync('application', options, workspaceTree)
       .toPromise();
     const content = tree.readContent('/projects/foo/.browserslistrc');
     expect(content).toContain('not IE 11');
-    expect(content).toContain('not IE 9-10');
   });
 
   it(`should create kebab-case project folder names with camelCase project name`, async () => {

tests/legacy-cli/e2e/assets/protractor-saucelabs.conf.js

@@ -44,12 +44,6 @@ exports.config = {
       version: '13.1',
       tunnelIdentifier,
     },
-    {
-      browserName: 'internet explorer',
-      platform: 'Windows 8',
-      version: '10',
-      tunnelIdentifier,
-    },
     {
       browserName: 'internet explorer',
       platform: 'Windows 8.1',