Delete the unused $jscomp.registerEs6ModuleExports from js/es6/modules/runtime.js

The Closure debug loader has a registerEs6ModuleExports method that gets used instead.

PiperOrigin-RevId: 725793014

Author: lauraharker

src/com/google/javascript/jscomp/js/es6/modules/runtime.js

@@ -479,29 +479,6 @@ $jscomp.registerAndLoadModule = function(
 };
 
 
-/**
- * Registers an object as if it is the exports of an ES6 module so that it may
- * be retrieved via $jscomp.require.
- *
- * Used by Closure Library in the event that only some ES6 modules need
- * transpilation.
- *
- * @param {string} absModulePath
- * @param {?} exports
- */
-$jscomp.registerEs6ModuleExports = function(absModulePath, exports) {
-  if (moduleCache.has(absModulePath)) {
-    throw new Error(
-        'Module at path ' + absModulePath + ' is already registered.');
-  }
-
-  var entry =
-      new CacheEntry(null, new Module(absModulePath, exports), absModulePath);
-  moduleCache.set(absModulePath, entry);
-  markAvailable(absModulePath);
-};
-
-
 /**
  * Hook to clear all loaded modules. Meant to only be used by tests.
  */