feat: remove mongo

Author: promiseofcake

Makefile

@@ -1,5 +1,5 @@
 SOURCE ?= file go_bindata github github_ee bitbucket aws_s3 google_cloud_storage godoc_vfs gitlab
-DATABASE ?= postgres mysql redshift cassandra spanner cockroachdb yugabytedb clickhouse mongodb sqlserver firebird neo4j pgx pgx5 rqlite
+DATABASE ?= postgres mysql redshift cassandra spanner cockroachdb yugabytedb clickhouse sqlserver firebird neo4j pgx pgx5 rqlite
 DATABASE_TEST ?= $(DATABASE) sqlite sqlite3 sqlcipher
 VERSION ?= $(shell git describe --tags 2>/dev/null | cut -c 2-)
 TEST_FLAGS ?=

README.md

@@ -34,7 +34,6 @@ Database drivers run migrations. [Add a new database?](database/driver.go)
 * [SQLCipher](database/sqlcipher)
 * [MySQL / MariaDB](database/mysql)
 * [Neo4j](database/neo4j)
-* [MongoDB](database/mongodb)
 * [CrateDB](database/crate) ([todo #170](https://github.com/mattes/migrate/issues/170))
 * [Shell](database/shell) ([todo #171](https://github.com/mattes/migrate/issues/171))
 * [Google Cloud Spanner](database/spanner)