Remove conventional-changelog from publish script

Author: eablack

package.json

@@ -75,7 +75,7 @@
     "build": "rm -rf lib && tsc",
     "lint": "tsc -p test --noEmit && eslint . --ext .ts",
     "posttest": "npm run lint",
-    "prepublishOnly": "npm run build && npm run changelog",
+    "prepublishOnly": "npm run build",
     "test": "nyc mocha --forbid-only \"test/**/*.test.ts\"",
     "changelog": "conventional-changelog -p conventionalcommits -i CHANGELOG.md -s",
     "example": "sh examples/run.sh"