chore(bitgo): remove unused dependencies

Remove @bitgo/blockapis and fs-extra dependencies that are declared but not used in the code.

This fixes the code-quality (dependencies) CI check failure.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Issue: BTC-2652

Author: OttoAllmendinger

modules/bitgo/package.json

@@ -47,7 +47,6 @@
     "@bitgo/abstract-lightning": "^7.4.0",
     "@bitgo/abstract-utxo": "^10.1.0",
     "@bitgo/account-lib": "^27.14.0",
-    "@bitgo/blockapis": "^1.12.4",
     "@bitgo/sdk-api": "^1.71.0",
     "@bitgo/sdk-coin-ada": "^4.17.2",
     "@bitgo/sdk-coin-algo": "^2.6.0",
@@ -131,7 +130,6 @@
     "@bitgo/utxo-lib": "^11.13.1",
     "@types/superagent": "^4.1.3",
     "bignumber.js": "^9.1.1",
-    "fs-extra": "^9.1.0",
     "lodash": "^4.17.14",
     "openpgp": "5.11.3",
     "stellar-sdk": "^10.0.1",