code: public void dropTrigger(String tableName, String geometryColumnName,
  			String triggerName) {
  
  		String sqlName = GeoPackageProperties.getProperty(TRIGGER_PROPERTY,
  				TRIGGER_DROP_PROPERTY);
  		executeSQL(sqlName, tableName, geometryColumnName, null, triggerName);
  	}
docs: Drop the trigger for the table, geometry column, and trigger name
  
  @param tableName
  table name
  @param geometryColumnName
  geometry column name
  @param triggerName
  trigger name