If you want to remove the welcome panel in WordPress dashboard then this is the easiest way to remove it is by simply clicking on the Dismiss button at the top right corner of the panel.
Now open the Screen Options which is at the top right corner of the screen and uncheck the checkbox next to ‘Welcome’ option.
Apart from this, you can also use the below code at the end of your theme’s functions.php file or you can also add the below code inside your site-specific plugin.
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