Applicable to all units. Delete port range(s) from UDP Port Ranges Table.
Get operation will return the empty string.
A range is defined <start>-<end> or <start> where <start> is the Start
Port of the range and <end> is the End Port. If only <start> is
specified the range is <start>-<start>.
The value of <start> and <end> are between 0..65535.
The user can delete several ranges using a comma to separate between
ranges.
Example: 10-256,99,987-900