Remove remaining @flow annotations

src/options.js

@@ -1,4 +1,3 @@
-/* @flow */
 // A second optional argument can be given to further configure
 // the parser process. These options are recognized:
 

src/parser/comments.js

@@ -1,4 +1,3 @@
-/* @flow */
 /* eslint max-len: 0 */
 
 /**

src/parser/index.js

@@ -1,5 +1,3 @@
-/* @flow */
-
 import { reservedWords } from "../util/identifier";
 import { getOptions } from "../options";
 import Tokenizer from "../tokenizer";

src/parser/util.js

@@ -1,5 +1,3 @@
-/* @flow */
-
 import { types as tt } from "../tokenizer/types";
 import Parser from "./index";
 import { lineBreak } from "../util/whitespace";

src/tokenizer/context.js

@@ -1,5 +1,3 @@
-/* @flow */
-
 // The algorithm used to determine whether a regexp can appear at a
 // given point in the program is loosely based on sweet.js' approach.
 // See https://github.com/mozilla/sweet.js/wiki/design

src/util/whitespace.js

@@ -1,5 +1,3 @@
-/* @flow */
-
 // Matches a whole line break (where CRLF is considered a single
 // line break). Used to count lines.