Remove changes in migration docs

Author: Luca Forstner

MIGRATION.md

@@ -32,44 +32,6 @@ import {
 } from '@sentry/minimal';
 ```
 
-## Explicit Client Options
-
-In v7, we've updated the `Client` to have options seperate from the options passed into `Sentry.init`. This means that constructing a client now requires 3 options: `integrations`, `transport` and `stackParser`. These can be customized as you see fit.
-
-```ts
-import { BrowserClient, defaultStackParsers, defaultIntegrations, makeFetchTransport } from '@sentry/browser';
-import { stackParserFromOptions } from '@sentry/utils';
-
-// New in v7:
-const client = new BrowserClient({
-  transport: makeFetchTransport,
-  stackParser: stackParserFromOptions(defaultStackParsers),
-  integrations: [...defaultIntegrations],
-});
-
-// Before:
-const client = new BrowserClient();
-```
-
-Since you now explicitly pass in the dependencies of the client, you can also tree-shake out dependencies that you do not use this way. For example, you can tree-shake out the SDK's default integrations and only use the ones that you want like so:
-
-```ts
-import { BrowserClient, defaultStackParsers, Integrations, makeFetchTransport } from '@sentry/browser';
-import { stackParserFromOptions } from '@sentry/utils';
-
-// New in v7:
-const client = new BrowserClient({
-  transport: makeFetchTransport,
-  stackParser: stackParserFromOptions(defaultStackParsers),
-  integrations: [
-    new Integrations.Breadcrumbs(),
-    new Integrations.GlobalHandlers(),
-    new Integrations.LinkedErrors(),
-    new Integrations.Dedupe(),
-  ],
-});
-```
-
 ## Removal Of Old Platform Integrations From `@sentry/integrations` Package
 
 The following classes will be removed from the `@sentry/integrations` package and can no longer be used: