You want to remove a column introduced by a third-party extension via declarative schema.
A. Create the etc/db_schema.xml file and specify disable=”true” on the column
B. Modify the original etc/db_schema.xml file and remove the column from there
C. Create a SchemaPatch file and remove the column programmatically
D. Copy the etc/db_schema.xml file into your module and remove the column from your copy