Deleted unused schema util

refs 03cbc89a53

- this util was added to fix an issue with the types of columns in
  MySQL, but the issue was back in 2014 (!!)
- we're long past doing it in this way so we'll likely never use it
  again

ghost/core/core/server/data/schema/clients/mysql.js

@@ -27,22 +27,7 @@ const getColumns = function getColumns(table, transaction) {
     });
 };
 
-// This function changes the type of posts.html and posts.markdown columns to mediumtext. Due to
-// a wrong datatype in schema.js some installations using mysql could have been created using the
-// data type text instead of mediumtext.
-// For details see: https://github.com/TryGhost/Ghost/issues/1947
-const checkPostTable = function checkPostTable(transaction = db.knex) {
-    return transaction.raw('SHOW FIELDS FROM posts where Field ="html" OR Field = "markdown"').then(function (response) {
-        return _.flatten(_.map(response[0], function (entry) {
-            if (entry.Type.toLowerCase() !== 'mediumtext') {
-                return (transaction || db.knex).raw('ALTER TABLE posts MODIFY ' + entry.Field + ' MEDIUMTEXT');
-            }
-        }));
-    });
-};
-
 module.exports = {
-    checkPostTable: checkPostTable,
     getTables: getTables,
     getIndexes: getIndexes,
     getColumns: getColumns

ghost/core/core/server/data/schema/commands.js

@@ -411,14 +411,6 @@ function getColumns(table, transaction = db.knex) {
     return Promise.reject(tpl(messages.noSupportForDatabase, {client: client}));
 }
 
-function checkTables(transaction = db.knex) {
-    const client = transaction.client.config.client;
-
-    if (DatabaseInfo.isMySQL(transaction)) {
-        return clients[client].checkPostTable();
-    }
-}
-
 function createColumnMigration(...migrations) {
     async function runColumnMigration(conn, migration) {
         const {
@@ -449,7 +441,6 @@ function createColumnMigration(...migrations) {
 }
 
 module.exports = {
-    checkTables: checkTables,
     createTable: createTable,
     deleteTable: deleteTable,
     getTables: getTables,