Yep. In addition to the removal of register_globals sometime back, several deprecated extensions (like mysql_* and ereg_*) and magic quotes have also been removed.
Some other deprecations: http://php.net/manual/en/migration70.incompatible.php
Some other deprecations: http://php.net/manual/en/migration70.incompatible.php
A language is just as much about what features it excludes as to what it includes.