chore(aptos): Deprecate register_token in Rust

[satoshiotomakan]

This pull request removes support for the "managed coin register" functionality from the Aptos transaction builder and related code. The main changes include deleting the code for creating and handling managed coin registration transactions, as well as removing the associated Protobuf message and test logic.

Removed managed coin registration functionality:

• Deleted the managed_coin_register function from aptos_move_packages.rs, which built the transaction payload for registering a managed coin.
• Removed the register_token branch and method from TransactionFactory in transaction_builder.rs, eliminating support for building these transactions. [1] [2]
• Removed the import of managed_coin_register from transaction_builder.rs.

Protobuf and test cleanup:

• Deleted the ManagedTokensRegisterMessage message and its usage from Aptos.proto, and removed the corresponding field from the SigningInput message. [1] [2]
• Removed test logic for the register_token operation from signer.rs.

[github-actions]

Binary size comparison

➡️ aarch64-apple-ios:

- 14.07 MB
+ 14.10 MB 	 +26 KB

➡️ aarch64-apple-ios-sim:

- 14.07 MB
+ 14.10 MB 	 +28 KB

➡️ aarch64-linux-android:

- 18.56 MB
+ 18.56 MB 	 -9 KB

➡️ armv7-linux-androideabi:

- 15.53 MB
+ 15.52 MB 	 -6 KB

➡️ wasm32-unknown-emscripten:

- 13.23 MB
+ 13.22 MB 	 -4 KB