Remove all iOS related python code since it's unused

We don't use this script, since we don't have translations yet.
And when we do, it would be cool if we could use another language maybe.
To keep the number of different languages a bit lower?

Author: faern

.github/workflows/verify-locked-down-signatures.yml

@@ -10,7 +10,6 @@ on:
       - wireguard/libwg/go.sum
       - ci/keys/**
       - ci/verify-locked-down-signatures.sh
-      - ios/requirements.txt
       - ios/MullvadVPN.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
       - android/gradlew
       - android/gradlew.bat