docs: update tslint migration guide

fix #214

Author: RebeccaStevens

docs/user-guide/migrating-from-tslint.md

@@ -1,6 +1,6 @@
 # Migrating from TSLint
 
-In 2019, [Palantir plans to deprecate TSLint](https://github.com/palantir/tslint/issues/4534) and support the migration to ESLint.
+[TSLint is now deprecate](https://github.com/palantir/tslint/issues/4534).
 This guide is intended to help those who are using tslint-immutable to migrate their settings and projects to use eslint-plugin-functional.
 
 ## Configuration File
@@ -60,7 +60,6 @@ Below is a table mapping the `eslint-plugin-functional` rules to their `tslint-i
 | [`functional/no-this-expression`](../rules/no-this-expression.md)             | `no-this`                                               |
 | [`functional/no-class`](../rules/no-class.md)                                 | `no-class`                                              |
 | [`functional/no-mixed-type`](../rules/no-mixed-type.md)                       | `no-mixed-interface`                                    |
-| [`functional/prefer-type-literal`](../rules/prefer-type-literal.md)           | -                                                       |
 | [`functional/no-expression-statement`](../rules/no-expression-statement.md)   | `no-expression-statement`                               |
 | [`functional/no-conditional-statement`](../rules/no-conditional-statement.md) | `no-if-statement`                                       |
 | [`functional/no-loop-statement`](../rules/no-loop-statement.md)               | `no-loop-statement`                                     |