chore: remove rimraf as it is not used (#521)

Remove unused dependency.

Author: achingbrain

package.json

@@ -159,7 +159,7 @@
     "test:firefox": "aegir test -t browser -- --browser firefox",
     "test:firefox-webworker": "aegir test -t webworker -- --browser firefox",
     "test:electron-main": "aegir test -t electron-main",
-    "dep-check": "aegir dep-check -i rimraf",
+    "dep-check": "aegir dep-check",
     "generate": "run-s generate:*",
     "generate:proto": "pbjs -t static-module -w es6 -r ipfs-bitswap --force-number --no-verify --no-delimited --no-create --no-beautify --no-defaults --lint eslint-disable -o src/message/message.js src/message/message.proto",
     "generate:proto-types": "pbts -o src/message/message.d.ts src/message/message.js",
@@ -220,7 +220,6 @@
     "process": "^0.11.10",
     "promisify-es6": "^1.0.3",
     "protobufjs-cli": "^1.0.0",
-    "rimraf": "^3.0.2",
     "sinon": "^15.0.1",
     "stats-lite": "^2.2.0",
     "url": "^0.11.0",