lib/drop.js
function dropSchema(result, schema) {
  return this.knex.schema.dropTableIfExists(schema.tableName)
  .then(function () {
    return result.concat([schema]);
  });
}
function dropSchema(result, schema) {
  return this.knex.schema.dropTableIfExists(schema.tableName)
  .then(function () {
    return result.concat([schema]);
  });
}
function dropSchema ( result , schema ) { return this . knex . schema . dropTableIfExists ( schema . tableName ) . then ( function ( ) { return result . concat ( [ schema ] ) ; } ) ; }
Drop schema table.

@param {[Schema]} result - reduce accumulator
@param {Schema} schema
@return {Promise}
Drop schema table .