Clean up dependencies (#40)

* Remove unused dependencies

* Update ethers to latest

* Delete yarn error log file

.gitignore

@@ -1,2 +1,3 @@
 dist
 node_modules
+yarn-error.log

package.json

@@ -22,29 +22,16 @@
     "prepublishOnly": "tsdx build"
   },
   "dependencies": {
-    "@openzeppelin/cli": "^2.8.2",
-    "@uniswap/v2-core": "^1.0.1",
+    "@traderjoe-xyz/core": "^2.3.0",
     "big.js": "^5.2.2",
     "decimal.js-light": "^2.5.0",
+    "ethers": "^5.7.2",
     "jsbi": "^3.1.1",
     "tiny-invariant": "^1.1.0",
     "tiny-warning": "^1.0.3",
     "toformat": "^2.0.0"
   },
-  "peerDependencies": {
-    "@ethersproject/address": "^5.0.0-beta",
-    "@ethersproject/contracts": "^5.0.0-beta",
-    "@ethersproject/networks": "^5.0.0-beta",
-    "@ethersproject/providers": "^5.0.0-beta",
-    "@ethersproject/solidity": "^5.0.0-beta"
-  },
   "devDependencies": {
-    "@ethersproject/address": "^5.0.2",
-    "@ethersproject/contracts": "^5.0.2",
-    "@ethersproject/networks": "^5.0.2",
-    "@ethersproject/providers": "^5.0.5",
-    "@ethersproject/solidity": "^5.0.2",
-    "@traderjoe-xyz/core": "^2.3.0",
     "@types/big.js": "^4.0.5",
     "@types/jest": "^24.0.25",
     "babel-plugin-transform-jsbi-to-bigint": "^1.3.1",