*isa= \&UNIVERSAL::isa;

sub deleteReg {
    my $key= shift @_;  # Registry key to delete item from
    my $name= shift @_; # Name of item to delete
    {
        my $item= $key->{$name};
        if(  ! $item  ) {
            warn "Can't read $name in ",
                $key->Path(), ": $^E\n";
            return;
        }
        if(  ref($item)  &&  isa($item,"HASH")  ) {
            for my $subName (  keys %$item  ) {
                deleteReg( $item, $subName );
            }
        }
    }
    delete $key->{$name}
        or  warn "Can't delete $name from ",
                $key->Path(), ": $^E\n";
}

deleteReg(
    $Registry,
    "HKEY_LO­CAL_MACHINE/SOFTWARE­/MyWay/",
);