deps: remove bn.js (#334)

package.json

@@ -47,7 +47,6 @@
     "@ethereumjs/util": "^8.0.6",
     "@metamask/abi-utils": "^1.2.0",
     "@metamask/utils": "^5.0.2",
-    "bn.js": "^4.12.0",
     "ethereum-cryptography": "^2.0.0",
     "ethjs-util": "^0.1.6",
     "tweetnacl": "^1.0.3",
@@ -60,7 +59,6 @@
     "@metamask/eslint-config-jest": "^11.1.0",
     "@metamask/eslint-config-nodejs": "^11.1.0",
     "@metamask/eslint-config-typescript": "^11.1.0",
-    "@types/bn.js": "^4.11.6",
     "@types/jest": "^27.0.6",
     "@types/node": "^14.14.25",
     "@typescript-eslint/eslint-plugin": "^5.59.1",

yarn.lock

@@ -901,13 +901,11 @@ __metadata:
     "@metamask/eslint-config-nodejs": ^11.1.0
     "@metamask/eslint-config-typescript": ^11.1.0
     "@metamask/utils": ^5.0.2
-    "@types/bn.js": ^4.11.6
     "@types/jest": ^27.0.6
     "@types/node": ^14.14.25
     "@typescript-eslint/eslint-plugin": ^5.59.1
     "@typescript-eslint/parser": ^5.59.1
     ajv: ^8.11.0
-    bn.js: ^4.12.0
     eslint: ^8.27.0
     eslint-config-prettier: ^8.3.0
     eslint-plugin-import: ^2.23.4
@@ -1147,15 +1145,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/bn.js@npm:^4.11.6":
-  version: 4.11.6
-  resolution: "@types/bn.js@npm:4.11.6"
-  dependencies:
-    "@types/node": "*"
-  checksum: 7f66f2c7b7b9303b3205a57184261974b114495736b77853af5b18d857c0b33e82ce7146911e86e87a87837de8acae28986716fd381ac7c301fd6e8d8b6c811f
-  languageName: node
-  linkType: hard
-
 "@types/debug@npm:^4.1.7":
   version: 4.1.7
   resolution: "@types/debug@npm:4.1.7"
@@ -1757,13 +1746,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"bn.js@npm:^4.12.0":
-  version: 4.12.0
-  resolution: "bn.js@npm:4.12.0"
-  checksum: 39afb4f15f4ea537b55eaf1446c896af28ac948fdcf47171961475724d1bb65118cca49fa6e3d67706e4790955ec0e74de584e45c8f1ef89f46c812bee5b5a12
-  languageName: node
-  linkType: hard
-
 "brace-expansion@npm:^1.1.7":
   version: 1.1.11
   resolution: "brace-expansion@npm:1.1.11"