Remove "Install app" from address field

[Capsaicin_Commando]

Description of the issue: Icon for installing a websites “app” appears in URL/address field.
How can this issue be reproduced?

1. Open Brave.
2. Go to www.youtube.com.
3. Look at far right of URL/address field (image attached).

Expected result: For it to not show up, ever again.

**Brave Version( check About Brave):

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Additional Information: