PHP 7 Audit - WPMU DEV Dashboard

Hello,

I am preparing to move my site to a server using PHP7 and ran an audit on all my plugins and themes to help better ensure compatibility with PHP7. Below you will find the results of ERRORS and WARNINGS that came back for the WPMU DEV Dashboard Plugin. Any thoughts on whether these should be addressed prior to me moving to PHP 7 server?

Thanks

FILE: /wp-content/plugins/wpmudev-updates/template/support-system.php
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FOUND 1 ERROR AND 4 WARNINGS AFFECTING 5 LINES
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  77 | ERROR   | Extension 'mysql_' is deprecated since PHP 5.5 and removed since PHP 7.0 - use mysqli instead.
 313 | WARNING | Function name "__render_list" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
 334 | WARNING | Function name "__error_reporting" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
 376 | WARNING | Function name "__value_format" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
 390 | WARNING | Function name "__const_format" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
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