I don't believe there is a way to just drop a column from a table. Probably due to the possible effect on Primary and Foreign Keys (Referential Integrity as a whole.)
You'll need to do this:
Create table NewTable(
ID integer,
Data1 Char(9),
Data2 Char(16),
Amount Decimal (13,2) )
;
Then DO
Insert into NewTable
Select ID, Data1, Data2, Amount
From OldTable
;
Where you don't copy the unwanted column over to NewTable
Then Do
Drop OldTable;