improve mocha: remove redundant spec pattern from config

The spec pattern in .mocharc.json is redundant since it's already
specified in the npm script command line arguments.

Co-authored-by: llm-git <llm-git@ttll.de>

Issue: BTC-3047

Author: OttoAllmendinger

packages/wasm-utxo/.mocharc.json

@@ -1,6 +1,5 @@
 {
   "extensions": ["ts", "tsx", "js", "jsx"],
-  "spec": ["test/**/*.ts"],
   "ignore": ["test/benchmark/**"],
   "node-option": ["import=tsx/esm", "experimental-wasm-modules"]
 }

packages/wasm-utxo/package.json

@@ -44,7 +44,7 @@
   ],
   "scripts": {
     "test": "npm run test:mocha && npm run test:wasm-pack && npm run test:imports",
-    "test:mocha": "mocha --recursive test",
+    "test:mocha": "mocha --recursive 'test/**/*.ts'",
     "test:benchmark": "mocha test/benchmark/signing.ts --timeout 600000",
     "test:wasm-pack": "npm run test:wasm-pack-node && npm run test:wasm-pack-chrome",
     "test:wasm-pack-node": "./scripts/wasm-pack-test.sh --node",