Remove flow

packages/babel-plugin-transform-es2015-parameters/src/default.js

@@ -22,7 +22,7 @@ let buildCutOff = template(`
 `);
 
 function hasDefaults(node) {
-  for (let param of (node.params: Array<Object>)) {
+  for (let param of node.params) {
     if (!t.isIdentifier(param)) return true;
   }
   return false;

packages/babel-plugin-transform-es2015-parameters/src/destructuring.js

@@ -2,7 +2,7 @@ import * as t from "babel-types";
 
 export let visitor = {
   Function(path) {
-    let params: Array = path.get("params");
+    let params = path.get("params");
 
     // If there's a rest param, no need to loop through it. Also, we need to
     // hoist one more level to get `declar` at the right spot.

packages/babel-plugin-transform-es2015-parameters/src/index.js

@@ -1,4 +1,3 @@
-import type { NodePath } from "babel-traverse";
 import { visitors } from "babel-traverse";
 
 import * as destructuring from "./destructuring";
@@ -10,7 +9,7 @@ export default function () {
     visitor: visitors.merge([{
       ArrowFunctionExpression(path) {
         // default/rest visitors require access to `arguments`
-        let params: Array<NodePath> = path.get("params");
+        let params = path.get("params");
         for (let param of params) {
           if (param.isRestElement() || param.isAssignmentPattern()) {
             path.arrowFunctionToShadowed();

packages/babel-plugin-transform-es2015-parameters/src/rest.js

@@ -198,7 +198,7 @@ export let visitor = {
 
     // There are only "shorthand" references
     if (!state.deopted && !state.references.length) {
-      for (let {path, cause} of (state.candidates: Array)) {
+      for (let {path, cause} of state.candidates) {
         switch (cause) {
           case "indexGetter":
             optimiseIndexGetter(path, argsId, state.offset);