Remove `initialize_schema_migrations_table` and `initialize_internal_metadata_table` internal public methods

These internal methods accidentally appeared in the doc, and so almost
useless. It is enough to create these internal tables directly, and
indeed do so in several places.

https://github.com/rails/rails/blob/v5.0.1/activerecord/lib/active_record/schema.rb#L55
https://github.com/rails/rails/blob/v5.0.1/activerecord/lib/active_record/railties/databases.rake#L6
https://github.com/rails/rails/blob/v5.0.1/activerecord/lib/active_record/tasks/database_tasks.rb#L230

3 files changed, 3 insertions, 13 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
index 1bdc086380..95725cd883 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
@@ -1008,16 +1008,6 @@ module ActiveRecord
         end
       end
 
-      # Should not be called normally, but this operation is non-destructive.
-      # The migrations module handles this automatically.
-      def initialize_schema_migrations_table
-        ActiveRecord::SchemaMigration.create_table
-      end
-
-      def initialize_internal_metadata_table
-        ActiveRecord::InternalMetadata.create_table
-      end
-
       def internal_string_options_for_primary_key # :nodoc:
         { primary_key: true }
       end
diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb
index 31c2397bc9..339332a60d 100644
--- a/activerecord/lib/active_record/migration.rb
+++ b/activerecord/lib/active_record/migration.rb
@@ -1107,8 +1107,8 @@ module ActiveRecord
 
       validate(@migrations)
 
-      Base.connection.initialize_schema_migrations_table
-      Base.connection.initialize_internal_metadata_table
+      ActiveRecord::SchemaMigration.create_table
+      ActiveRecord::InternalMetadata.create_table
     end
 
     def current_version
diff --git a/activerecord/lib/active_record/schema.rb b/activerecord/lib/active_record/schema.rb
index 7a2bc9c8af..5104427339 100644
--- a/activerecord/lib/active_record/schema.rb
+++ b/activerecord/lib/active_record/schema.rb
@@ -48,7 +48,7 @@ module ActiveRecord
       instance_eval(&block)
 
       if info[:version].present?
-        initialize_schema_migrations_table
+        ActiveRecord::SchemaMigration.create_table
         connection.assume_migrated_upto_version(info[:version], migrations_paths)
       end