test: remove remnant of previous local-test style from prepare run script

Author: mikehardy

tests/package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "build:clean": "rimraf dist && rimraf android/build && rimraf android/app/build && rimraf android/.gradle && rimraf ios/build && rimraf macos/build",
     "build:macos": "xcodebuild CC=clang CPLUSPLUS=clang++ LD=clang LDPLUSPLUS=clang++ -workspace macos/io.invertase.testing.xcworkspace -scheme io.invertase.testing-macOS -configuration Debug -derivedDataPath macos/build | xcbeautify",
-    "prepare": "patch-package && cd local-tests && (yarn cpy --no-overwrite index.example.js ./ --rename=index.js || echo 'Looks like the local test file is already there. Previous copy error may be ignored.')"
+    "prepare": "patch-package"
   },
   "dependencies": {
     "@react-native-async-storage/async-storage": "^2.2.0",