cleaning up unused code, fixing bad link (GoogleCloudPlatform#740)

Author: jabubake

appengine-java8/spanner/README.md

@@ -41,14 +41,14 @@ You may also [create and use service account credentials](https://cloud.google.c
 ```
 
 To see the results of the local application, open
-[http://localhost:8080/run](http://localhost:8080/run) in a web browser.
+[http://localhost:8080/spanner](http://localhost:8080/spanner) in a web browser.
 Note : by default all the spanner example operations run in order, this operation may take a while to show results.
 
 ## Deploying
 
     $ mvn clean appengine:deploy
 
 To see the results of the deployed sample application, open
-`https://spanner-dot-PROJECTID.appspot.com/run` in a web browser.
+`https://spanner-dot-PROJECTID.appspot.com/spanner` in a web browser.
 Note : by default all the spanner example operations run in order, this operation may take a while to show results.
 

appengine-java8/spanner/src/main/webapp/WEB-INF/appengine-web.xml

@@ -21,8 +21,6 @@
   </manual-scaling>
   <system-properties>
     <property name="SPANNER_INSTANCE" value="spanner-instance" />
-    <!-- Optional setting to provide an explicit database name -->
-    <!--<property name="SPANNER_DATABASE" value="my-database" />-->
   </system-properties>
 </appengine-web-app>
   <!-- [END config] -->