Updates the reference api for Api Checker to 2.1. Fixes 2 small bugs in Api Checker.

Patch by: amitmanjhi
Review by: jat
Review at http://gwt-code-reviews.appspot.com/1095801


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9210 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/build.xml b/build.xml
index 5a53310..7bc3744 100755
--- a/build.xml
+++ b/build.xml
@@ -31,7 +31,7 @@
   </macrodef>
 
   <property name="gwt.apicheck.config" 
-    location="tools/api-checker/config/gwt20_21userApi.conf"/>
+    location="tools/api-checker/config/gwt21_22userApi.conf"/>
 
   <target name="buildonly"
           description="[action] Minimal one-platform devel build, without distro packaging">
@@ -175,8 +175,6 @@
       <classpath>
         <pathelement location="${gwt.build.out}/tools/api-checker/bin"/>
         <fileset dir="${gwt.build.lib}" includes="gwt-user.jar,gwt-dev.jar" />
-        <pathelement location="${gwt.tools.lib}//hibernate/validator/hibernate-validator-4.1.0.Final.jar" />
-        <pathelement location="${gwt.tools.lib}/javax/validation/validation-api-1.0.0.GA.jar" />
         <pathelement path="${java.class.path}"/>
         <pathelement location="${gwt.tools.lib}/apache/ant-1.6.5.jar" />
       </classpath>