Update NormalModuleReplacementPlugin to new api

Fix for
```
Error: NormalModuleFactory.afterResolve is no longer a waterfall hook, but a bailing hook instead. Do not return the passed object, but modify it instead. Returning false will ignore the request and results in no module created.
      at hooks.afterResolve.callAsync (webpack/lib/NormalModuleFactory.js:192:14)
```

lib/NormalModuleReplacementPlugin.js

@@ -40,7 +40,6 @@ class NormalModuleReplacementPlugin {
 							result.request = newResource;
 						}
 					}
-					return result;
 				});
 				nmf.hooks.afterResolve.tap("NormalModuleReplacementPlugin", result => {
 					const createData = result.createData;
@@ -63,7 +62,6 @@ class NormalModuleReplacementPlugin {
 							}
 						}
 					}
-					return result;
 				});
 			}
 		);