If you want to hide the plugin activate and update notification from your plugin page then kindly follow the below steps.
Open the file in this path /wp-content/themes/theme-folder/function.php using some editor like DreamWeaver.
If you have activated the child theme then Open the file in this path /wp-content/themes/childtheme-folder/function.php using some editor like DreamWeaver and append the below attached code.
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