DropGeometryTable — Drops a table and all its references in geometry_columns.
boolean DropGeometryTable(varchar 
			table_name);
boolean DropGeometryTable(varchar 
			schema_name, varchar 
			table_name);
boolean DropGeometryTable(varchar 
			catalog_name, varchar 
			schema_name, varchar 
			table_name);
Drops a table and all its references in geometry_columns. Note: uses current_schema() on schema-aware pgsql installations if schema is not provided.