fix: 删除bignumber

package.json

@@ -51,7 +51,6 @@
     "@umijs/test": "^3.2.0",
     "antd-img-crop": "^3.12.0",
     "babel-plugin-transform-remove-console": "^6.9.4",
-    "bignumber": "^1.1.0",
     "bignumber.js": "^9.0.1",
     "bizcharts": "^4.0.14",
     "copy-to-clipboard": "^3.3.1",