Returns a copy of plist with indicator and its value removed, if found.
PList is shorthand for "Property List", which a list of name-value pairs. A properly formed plist must contain an even number of items, and every odd-numbered position must contain a Name. The function does not attempt to fix an incorrect plist and will return an error if it attempts to remove a name without a value.
removeFromPList ( indicator As Name, _
plist As List ) As List