how to remove firefox view NOW

You can simply reset your theme by opening the Theme page from Add-ons and themes, and selecting your old theme: System theme, Light or Dark, whichever you have used.

You can right-click the Firefox View button and click "Remove from Toolbar" to remove this button.

• https://support.mozilla.org/en-US/kb/customize-firefox-controls-buttons-and-toolbars
• https://support.mozilla.org/en-US/kb/how-set-tab-pickup-firefox-view