Remove unnecessary testing/README.md

Sub-packages test-helpers and virtual-authenticator have their own READMEs.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/testing/README.md

@@ -1,34 +0,0 @@
-# Testing Packages
-
-Shared testing utilities for the RevIQ platform.
-
-## Packages
-
-### @reviq/test-helpers
-
-Database testing utilities including test database setup, transactions, and fixtures.
-
-```typescript
-import { createTestDb, withTestTransaction, describeE2E } from "@reviq/test-helpers";
-```
-
-### @reviq/virtual-authenticator
-
-WebAuthn virtual authenticator for testing passkey flows without real hardware.
-
-```typescript
-import { VirtualAuthenticator } from "@reviq/virtual-authenticator";
-```
-
-## Usage
-
-These packages are used internally for e2e and integration tests. Add them as dev dependencies:
-
-```json
-{
-  "devDependencies": {
-    "@reviq/test-helpers": "workspace:*",
-    "@reviq/virtual-authenticator": "workspace:*"
-  }
-}
-```