diff --git a/includes/Services/PluginInstaller.php b/includes/Services/PluginInstaller.php
index 76def9d..cdf0bf0 100644
--- a/includes/Services/PluginInstaller.php
+++ b/includes/Services/PluginInstaller.php
@@ -371,24 +371,6 @@ public static function is_nfd_slug( $plugin ) {
 		return false;
 	}
 
-	/**
-	 * Determines if a plugin has already been installed.
-	 *
-	 * @param string $plugin_path Path to the plugin's header file.
-	 * @return boolean
-	 */
-	public static function is_plugin_installed( $plugin_path ) {
-		if ( ! function_exists( 'get_plugins' ) ) {
-			require_once ABSPATH . 'wp-admin/includes/plugin.php';
-		}
-		$all_plugins = \get_plugins();
-		if ( ! empty( $all_plugins[ $plugin_path ] ) ) {
-			return true;
-		} else {
-			return false;
-		}
-	}
-
 	/**
 	 * Get the type of plugin slug. Ref: includes/Data/Plugins.php for the different types.
 	 *