Remove migration for migration table (readme)

This commit removes the migration number 5 which created the migration
table. The initialization of the migration table will be implemented in
the upcoming migration script by itself. Sorry!

If you recently installed the application with a fresh database which
contained the migration table, please manually set the schema_version
to 4. It is recommended to only install a specific tag instead of the
latest master branch unless you are a developer or know what you do.

UPDATE migration SET schema_version = 4

2 files changed, 1 insertions, 4 deletions

diff --git a/core/db/database.sql b/core/db/database.sql
index ae61034..7a073cb 100644
--- a/core/db/database.sql
+++ b/core/db/database.sql
@@ -3,7 +3,7 @@
 -- =============================================================================
 CREATE TABLE `migration` (`schema_version` smallint(4) NOT NULL)
 	ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
-INSERT INTO `migration` (`schema_version`) VALUES (5);
+INSERT INTO `migration` (`schema_version`) VALUES (4);
 
 -- =============================================================================
 -- Table structure for page items
diff --git a/core/db/migrations/5.sql b/core/db/migrations/5.sql
deleted file mode 100644
index a3c8e5a..0000000
--- a/core/db/migrations/5.sql
+++ /dev/null
@@ -1,3 +0,0 @@
-CREATE TABLE `migration` (`schema_version` smallint(4) NOT NULL)
-	ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
-INSERT INTO `migration` (`schema_version`) VALUES (5);