diff --git a/src/Db/Adapter/MysqlAdapter.php b/src/Db/Adapter/MysqlAdapter.php
index 54156672..5c0dd5d0 100644
--- a/src/Db/Adapter/MysqlAdapter.php
+++ b/src/Db/Adapter/MysqlAdapter.php
@@ -39,21 +39,6 @@ class MysqlAdapter extends AbstractAdapter
         self::PHINX_TYPE_MEDIUM_INTEGER,
     ];
 
-    /**
-     * @var bool[]
-     */
-    protected array $signedColumnTypes = [
-        self::PHINX_TYPE_INTEGER => true,
-        self::PHINX_TYPE_TINY_INTEGER => true,
-        self::PHINX_TYPE_SMALL_INTEGER => true,
-        self::PHINX_TYPE_MEDIUM_INTEGER => true,
-        self::PHINX_TYPE_BIG_INTEGER => true,
-        self::PHINX_TYPE_FLOAT => true,
-        self::PHINX_TYPE_DECIMAL => true,
-        self::PHINX_TYPE_DOUBLE => true,
-        self::PHINX_TYPE_BOOLEAN => true,
-    ];
-
     // These constants roughly correspond to the maximum allowed value for each field,
     // except for the `_LONG` and `_BIG` variants, which are maxed at 32-bit
     // PHP_INT_MAX value. The `INT_REGULAR` field is just arbitrarily half of INT_BIG
diff --git a/src/Db/Adapter/SqliteAdapter.php b/src/Db/Adapter/SqliteAdapter.php
index f0c52592..3acde97a 100644
--- a/src/Db/Adapter/SqliteAdapter.php
+++ b/src/Db/Adapter/SqliteAdapter.php
@@ -60,62 +60,6 @@ class SqliteAdapter extends AbstractAdapter
         self::PHINX_TYPE_VARBINARY => 'varbinary_blob',
     ];
 
-    /**
-     * List of aliases of supported column types
-     *
-     * @var string[]
-     */
-    protected static array $supportedColumnTypeAliases = [
-        'varchar' => self::PHINX_TYPE_STRING,
-        'tinyint' => self::PHINX_TYPE_TINY_INTEGER,
-        'tinyinteger' => self::PHINX_TYPE_TINY_INTEGER,
-        'smallint' => self::PHINX_TYPE_SMALL_INTEGER,
-        'int' => self::PHINX_TYPE_INTEGER,
-        'mediumint' => self::PHINX_TYPE_INTEGER,
-        'mediuminteger' => self::PHINX_TYPE_INTEGER,
-        'bigint' => self::PHINX_TYPE_BIG_INTEGER,
-        'tinytext' => self::PHINX_TYPE_TEXT,
-        'mediumtext' => self::PHINX_TYPE_TEXT,
-        'longtext' => self::PHINX_TYPE_TEXT,
-        'tinyblob' => self::PHINX_TYPE_BLOB,
-        'mediumblob' => self::PHINX_TYPE_BLOB,
-        'longblob' => self::PHINX_TYPE_BLOB,
-        'real' => self::PHINX_TYPE_FLOAT,
-    ];
-
-    /**
-     * List of known but unsupported Phinx column types
-     *
-     * @var string[]
-     */
-    protected static array $unsupportedColumnTypes = [
-        self::PHINX_TYPE_BIT,
-        self::PHINX_TYPE_CIDR,
-        self::PHINX_TYPE_ENUM,
-        self::PHINX_TYPE_FILESTREAM,
-        self::PHINX_TYPE_GEOMETRY,
-        self::PHINX_TYPE_INET,
-        self::PHINX_TYPE_INTERVAL,
-        self::PHINX_TYPE_LINESTRING,
-        self::PHINX_TYPE_MACADDR,
-        self::PHINX_TYPE_POINT,
-        self::PHINX_TYPE_POLYGON,
-        self::PHINX_TYPE_SET,
-    ];
-
-    /**
-     * @var string[]
-     */
-    protected array $definitionsWithLimits = [
-        'CHAR',
-        'CHARACTER',
-        'VARCHAR',
-        'VARYING CHARACTER',
-        'NCHAR',
-        'NATIVE CHARACTER',
-        'NVARCHAR',
-    ];
-
     /**
      * @var string
      */
diff --git a/src/Db/Adapter/SqlserverAdapter.php b/src/Db/Adapter/SqlserverAdapter.php
index 5a399d2e..f8375a46 100644
--- a/src/Db/Adapter/SqlserverAdapter.php
+++ b/src/Db/Adapter/SqlserverAdapter.php
@@ -41,16 +41,6 @@ class SqlserverAdapter extends AbstractAdapter
      */
     protected string $schema = 'dbo';
 
-    /**
-     * @var bool[]
-     */
-    protected array $signedColumnTypes = [
-        self::PHINX_TYPE_INTEGER => true,
-        self::PHINX_TYPE_BIG_INTEGER => true,
-        self::PHINX_TYPE_FLOAT => true,
-        self::PHINX_TYPE_DECIMAL => true,
-    ];
-
     /**
      * Quotes a schema name for use in a query.
      *
diff --git a/tests/TestCase/Config/AbstractConfigTestCase.php b/tests/TestCase/Config/AbstractConfigTestCase.php
index de9ec7b4..41656181 100644
--- a/tests/TestCase/Config/AbstractConfigTestCase.php
+++ b/tests/TestCase/Config/AbstractConfigTestCase.php
@@ -39,20 +39,10 @@ public function getConfigArray()
         ];
 
         return [
-            'default' => [
-                'paths' => [
-                    'migrations' => '%%PHINX_CONFIG_PATH%%/testmigrations2',
-                    'seeds' => '%%PHINX_CONFIG_PATH%%/db/seeds',
-                ],
-            ],
             'paths' => [
                 'migrations' => $this->getMigrationPath(),
                 'seeds' => $this->getSeedPath(),
             ],
-            'templates' => [
-                'file' => '%%PHINX_CONFIG_PATH%%/tpl/testtemplate.txt',
-                'class' => '%%PHINX_CONFIG_PATH%%/tpl/testtemplate.php',
-            ],
             'environment' => $adapter,
         ];
     }
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 7021e8a9..cf62964b 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -122,10 +122,6 @@
     ->add(new SimpleSnapshotPlugin())
     ->add(new TestBlogPlugin());
 
-if (!defined('PHINX_VERSION')) {
-    define('PHINX_VERSION', strpos('@PHINX_VERSION@', '@PHINX_VERSION') === 0 ? 'UNKNOWN' : '@PHINX_VERSION@');
-}
-
 // Create test database schema
 if (env('FIXTURE_SCHEMA_METADATA')) {
     $loader = new SchemaLoader();