fix(manifest-editor): remove postinstall script

packages/manifest-editor/package.json

@@ -1,6 +1,6 @@
 {
   "name": "joyent-manifest-editor",
-  "version": "1.1.0",
+  "version": "1.2.1",
   "license": "MPL-2.0",
   "description": "",
   "keywords": [],
@@ -19,7 +19,6 @@
     "test": "echo 0 `# bup && NODE_ENV=test jest --coverage`",
     "test-ci": "echo 0 `# NODE_ENV=test JEST_JUNIT_OUTPUT=$CIRCLE_TEST_REPORTS/test/manifest-editor.xml jest --coverage --coverageDirectory=$CIRCLE_ARTIFACTS/manifest-editor --testResultsProcessor=$(node -e \"console.log(require.resolve('jest-junit'))\")`",
     "build": "bup",
-    "postinstall": "bup",
     "prepublish": "redrun build"
   },
   "dependencies": {