build: remove classList signature tslint rule

With Angular dropping IE11 support in version 13, we can now use `classList.toggle` with the second `force` param. Related to #7374

Author: jelbourn

tools/tslint-rules/classListSignaturesRule.ts

@@ -133,7 +133,6 @@
     "setters-after-getters": true,
     "ng-on-changes-property-access": true,
     "require-breaking-change-version": true,
-    "class-list-signatures": true,
     "no-nested-ternary": true,
     "prefer-const-enum": true,
     "no-lifecycle-invocation": [true, "**/!(*.spec).ts"],