remove lerna-changelog

Author: AllenFang

lerna.json

@@ -3,15 +3,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "independent",  
-  "changelog": {
-    "repo": "react-bootstrap-table/react-bootstrap-table2",
-    "labels": {
-      "breaking change": ":boom: Breaking Change",
-      "enhancement": ":rocket: Enhancement",
-      "bug": ":bug: Bug Fix",
-      "document": ":memo: Documentation"
-    },
-    "cacheDir": ".changelog"
-  }
+  "version": "independent"
 }

package.json

@@ -58,7 +58,6 @@
     "jsdom": "11.2.0",
     "jsdom-global": "3.0.2",
     "lerna": "2.0.0",
-    "lerna-changelog": "^0.7.0",
     "node-sass": "4.5.3",
     "react-test-renderer": "16.0.0",
     "sass-loader": "6.0.6",