PHP issues

PHP Compatibility Checker gave the following issues for PHP 7,

FILE: /../wp-content/plugins/file-manager/BootStart/BootStart.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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339 | WARNING | Method name “FM_BootStart::__” is discouraged; PHP has reserved all method names with a double underscore prefix for future use
489 | WARNING | Method name “FM_BootStart::__p” is discouraged; PHP has reserved all method names with a double underscore prefix for future use
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FILE: /../wp-content/plugins/file-manager/elFinder/php/elFinder.class.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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1623 | WARNING | INI directive ‘safe_mode’ is deprecated since PHP 5.3 and removed since PHP 5.4.
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