API Remove deprecated code

src/RecipeInstaller.php

@@ -220,39 +220,4 @@ public function installLibrary(PackageInterface $package)
             );
         }
     }
-
-    /**
-     * Perform any file rewrites necessary to a relative path of a file being installed.
-     * E.g. if 'mysite' folder exists, rewrite 'mysite' to 'app' and 'mysite/code' to 'app/src'
-     *
-     * This will be removed in 2.0 as the app folder will be hard coded and no rewrites supported.
-     *
-     * @deprecated 1.2.0 Will be removed without equivalent functionality to replace it
-     * @param string $destinationRoot Project root
-     * @param string $relativePath Relative path to the resource being installed
-     * @return string Relative path we should write to
-     */
-    protected function rewriteFilePath($destinationRoot, $relativePath)
-    {
-        // If app folder exists, no rewrite
-        if (is_dir($destinationRoot . DIRECTORY_SEPARATOR . 'app')) {
-            return $relativePath;
-        }
-        // if mysite folder does NOT exist, no rewrite
-        if (!is_dir($destinationRoot . DIRECTORY_SEPARATOR . 'mysite')) {
-            return $relativePath;
-        }
-
-        // Return first rewrite
-        $rewrites = [
-            'app/src' => 'mysite/code',
-            'app' => 'mysite',
-        ];
-        foreach ($rewrites as $from => $to) {
-            if (stripos($relativePath ?? '', $from ?? '') === 0) {
-                return $to . substr($relativePath ?? '', strlen($from ?? ''));
-            }
-        }
-        return $relativePath;
-    }
 }