chore: remove edit event from action

Author: anuraghazra

.github/workflows/preview-theme.yml

@@ -7,21 +7,12 @@ on:
       - master
       - theme-preview-script
       - "themes/index.js"
-  issue_comment:
-    types: [edited]
 
 jobs:
-  comment:
-    if: contains(github.event.comment.html_url, '/pull/')
-    runs-on: ubuntu-latest
-    steps:
-      - name: say hello
-        if: contains(github.event.comment.body, 'Automated Theme Preview')
-        run: |
-          echo say hello
   build:
     runs-on: ubuntu-latest
     name: Install & Preview
+
     steps:
       - uses: actions/checkout@v1
       - uses: bahmutov/npm-install@v1