How to remove Pipeline and Shopify credit from footer

How to:

Open the Code Editor:

From your list of themes, find the Actions link for the theme you'd like to edit. Then select Edit code. Example draft theme:

Example if you're working from your main live/published theme:

Next, 

Open footer.liquid from Sections folder:

Part 1: Remove Powered by Shopify link:
Remove this line (usually line 80):

<li>{{ powered_by_link }}</li>

Part 2: Remove Pipeline Theme link:
Remove this line (usually line 81, right under the Shopify line):

<li><a href="http://corknine.com">{{'layout.footer.credit'|t}}</a></li>

Example:

After removing:
Save your file and refresh the site to view your changes.