Keyboard Shortcut :: Remove Google Chrome Bookmark
Edit
To reverse and accidental bookmark, go to System Preferences &gt; Keyboard &gt; Shortcuts and turn on Full Keyboard Access for &quot;All controls&quot;. Now one can use the tab key to highlight the Remove button then hit return to reverse.

Use ⌘+L to highlight the URL thus taking you to the Address bar.
From Chrome Support:
⌘+L Highlights the URL.
Takes a bit of retraining of muscle memory, but this is faster and is less complicated than trying to remap the Bookmark shortcut, which is built in by Google.
NOTE: This works in Safari and several other browsers too.