diff --git a/includes/class-sensei.php b/includes/class-sensei.php
index 955079274c..cd61b40d1d 100644
--- a/includes/class-sensei.php
+++ b/includes/class-sensei.php
@@ -511,13 +511,6 @@ private function __construct( $main_plugin_file_name, $args ) {
 	 * @since 1.9.0
 	 */
 	protected function init() {
-
-		// Localisation.
-		$this->load_plugin_textdomain();
-		add_action( 'init', array( $this, 'load_localisation' ), 0 );
-		add_action( 'update_option_WPLANG', array( $this, 'maybe_initiate_rewrite_rules_flush_after_language_change' ), 10, 2 );
-		add_action( 'upgrader_process_complete', array( $this, 'maybe_initiate_rewrite_rules_flush_on_translation_update' ), 10, 2 );
-
 		$this->initialize_cache_groups();
 		$this->initialize_global_objects();
 		$this->initialize_cli();
@@ -530,11 +523,14 @@ protected function init() {
 	 * @internal
 	 *
 	 * @since 4.20.2
+	 * @deprecated $$next-version$$
 	 *
 	 * @param mixed $old_value Old value.
 	 * @param mixed $new_value New value.
 	 */
 	public function maybe_initiate_rewrite_rules_flush_after_language_change( $old_value, $new_value ) {
+		_deprecated_function( __METHOD__, '$$next-version$$' );
+
 		if ( $old_value !== $new_value ) {
 			$this->initiate_rewrite_rules_flush();
 		}
@@ -546,11 +542,14 @@ public function maybe_initiate_rewrite_rules_flush_after_language_change( $old_v
 	 * @internal
 	 *
 	 * @since 4.20.2
+	 * @deprecated $$next-version$$
 	 *
 	 * @param WP_Upgrader $upgrader_object Upgrader object.
 	 * @param array       $options Options.
 	 */
 	public function maybe_initiate_rewrite_rules_flush_on_translation_update( $upgrader_object, $options ) {
+		_deprecated_function( __METHOD__, '$$next-version$$' );
+
 		if ( 'translation' === $options['type'] ) {
 			$this->initiate_rewrite_rules_flush();
 		}
@@ -986,9 +985,10 @@ public function register_widgets() {
 	 *
 	 * @access public
 	 * @since  1.0.0
-	 * @return void
+	 * @deprecated $$next-version$$
 	 */
 	public function load_localisation() {
+		_deprecated_function( __METHOD__, '$$next-version$$' );
 
 		load_plugin_textdomain( 'sensei-lms', false, dirname( plugin_basename( $this->main_plugin_file_name ) ) . '/lang/' );
 	}
@@ -998,9 +998,11 @@ public function load_localisation() {
 	 *
 	 * @access  public
 	 * @since   1.0.0
-	 * @return  void
+	 * @deprecated $$next-version$$
 	 */
 	public function load_plugin_textdomain() {
+		_deprecated_function( __METHOD__, '$$next-version$$' );
+
 		$domain = 'sensei-lms';
 
 		if ( is_admin() ) {
diff --git a/tests/unit-tests/test-class-sensei.php b/tests/unit-tests/test-class-sensei.php
index 1167bc409f..34d9bf91e9 100644
--- a/tests/unit-tests/test-class-sensei.php
+++ b/tests/unit-tests/test-class-sensei.php
@@ -210,70 +210,6 @@ public function testConstructor_Always_InitializesClockProperty() {
 		$this->assertInstanceOf( Clock_Interface::class, $sensei->clock );
 	}
 
-	public function testConstruct_Always_AddsActionOnUpdateOptionWplang() {
-		/* Arrange. */
-		$sensei = Sensei();
-
-		/* Assert. */
-		$this->assertSame( 10, has_action( 'update_option_WPLANG', [ $sensei, 'maybe_initiate_rewrite_rules_flush_after_language_change' ] ) );
-	}
-
-	public function testConstruct_Always_AddsActionOnUpgraderProcessComplete() {
-		/* Arrange. */
-		$sensei = Sensei();
-
-		/* Assert. */
-		$this->assertSame( 10, has_action( 'upgrader_process_complete', [ $sensei, 'maybe_initiate_rewrite_rules_flush_on_translation_update' ] ) );
-	}
-
-	public function testMaybeInitiateRewriteRulesFlushAfterLanguageChange_WhenLanguageChanged_UpdatesOption() {
-		/* Arrange. */
-		$sensei = Sensei();
-		update_option( 'sensei_flush_rewrite_rules', '0' );
-
-		/* Act. */
-		$sensei->maybe_initiate_rewrite_rules_flush_after_language_change( 'a', 'b' );
-
-		/* Assert. */
-		$this->assertSame( '1', get_option( 'sensei_flush_rewrite_rules' ) );
-	}
-
-	public function testMaybeInitiateRewriteRulesFlushAfterLanguageChange_WhenLanguageNotChanged_DoesntUpdateOption() {
-		/* Arrange. */
-		$sensei = Sensei();
-		update_option( 'sensei_flush_rewrite_rules', '0' );
-
-		/* Act. */
-		$sensei->maybe_initiate_rewrite_rules_flush_after_language_change( 'a', 'a' );
-
-		/* Assert. */
-		$this->assertSame( '0', get_option( 'sensei_flush_rewrite_rules' ) );
-	}
-
-	public function testMaybeInitiateRewriteRulesFlushOnTranslationUpdate_WhenNonTranslationUpdate_DoesntUpdateOption() {
-		/* Arrange. */
-		$sensei = Sensei();
-		update_option( 'sensei_flush_rewrite_rules', '0' );
-
-		/* Act. */
-		$sensei->maybe_initiate_rewrite_rules_flush_on_translation_update( new stdClass(), array( 'type' => 'a' ) );
-
-		/* Assert. */
-		$this->assertSame( '0', get_option( 'sensei_flush_rewrite_rules' ) );
-	}
-
-	public function testMaybeInitiateRewriteRulesFlushOnTranslationUpdate_WhenTranslationUpdate_UpdatesOption() {
-		/* Arrange. */
-		$sensei = Sensei();
-		update_option( 'sensei_flush_rewrite_rules', '0' );
-
-		/* Act. */
-		$sensei->maybe_initiate_rewrite_rules_flush_on_translation_update( new stdClass(), array( 'type' => 'translation' ) );
-
-		/* Assert. */
-		$this->assertSame( '1', get_option( 'sensei_flush_rewrite_rules' ) );
-	}
-
 	/**
 	 * Create courses and comments for the course.
 	 *