latest babel 7.7.0 is causing babel-plugin-minify-simplify to fail

**Describe the bug**

After updating to the babel modules version 7.7.0 published on 11/05/19, `babel-plugin-minify-simplify/lib/index.js:549:40` is now failing with `Cannot set property inList of [object Object] which has only a getter`.

This is pulled in by `babel-preset-minify` 0.4.3. It's used to minify React code.

**To Reproduce**

Minimal code to reproduce the bug
`package.json`

```js
{
"name": "m1",
"dependencies": {
"@babel/cli": "^7.7.0",
"@babel/core": "^7.7.0",
"@babel/preset-env": "^7.7.1",
"@babel/preset-react": "^7.7.0",
"babel-preset-minify": "^0.5.1"
}
}
```

`.babelrc.js`:

```js
module.exports = {
presets: [["@babel/env", { modules: "auto" }], "@babel/react", "minify"].filter(x => x)
};
```

`test.js`

```js
function test(b) {
if (b.foo) {
return b.foo;
}
}
```

command: `npx babel test.js`

**Actual Output**

Error thrown

**Expected Output**

No error thrown

**Stack Trace**

```
{ TypeError: ./test.js: Cannot set property inList of [object Object] which has only a getter
at PluginPass.exit (./node_modules/babel-plugin-minify-simplify/lib/index.js:549:40)
at newFn (./node_modules/@babel/traverse/lib/visitors.js:179:21)
at NodePath._call (./node_modules/@babel/traverse/lib/path/context.js:55:20)
at NodePath.call (./node_modules/@babel/traverse/lib/path/context.js:42:17)
at NodePath.visit (./node_modules/@babel/traverse/lib/path/context.js:99:8)
at TraversalContext.visitQueue (./node_modules/@babel/traverse/lib/context.js:112:16)
at TraversalContext.visitSingle (./node_modules/@babel/traverse/lib/context.js:84:19)
at TraversalContext.visit (./node_modules/@babel/traverse/lib/context.js:140:19)
at Function.traverse.node (./node_modules/@babel/traverse/lib/index.js:84:17)
at NodePath.visit (./node_modules/@babel/traverse/lib/path/context.js:97:18) code: 'BABEL_TRANSFORM_ERROR' }
```

**Configuration**

How are you using babel-minify?

`babel-minify CLI`

babel-minify version: `0.4.3`

babel version : `@babel/core@7.7.0`

babel-minify-config:

```json5
{
removeConsole: true,
keepFnNames: true
}
```

babelrc:

```json5
{
plugins: [],
presets: []
}
```

**Possible solution**

**Additional context**