Remove "Update Site URL" from RAP features

The URL and the name of the Update Site doesn't seem to be used anywhere
anymore; moreover the URL and the name were outdated. Removing them
seems to be appropriate.

Change-Id: I281402e4dcf782a970adf0d07879a1aa840ee8bf
Signed-off-by: Markus Knauer <mknauer@eclipsesource.com>
diff --git a/features/org.eclipse.rap.tools.feature/feature.xml b/features/org.eclipse.rap.tools.feature/feature.xml
index 8bf85e9..af7a2c2 100644
--- a/features/org.eclipse.rap.tools.feature/feature.xml
+++ b/features/org.eclipse.rap.tools.feature/feature.xml
@@ -19,10 +19,6 @@
       %license
    </license>
 
-   <url>
-      <update label="Remote Application Platform (RAP) 3.0 Tools Repository" url="http://download.eclipse.org/rt/rap/tools/3.0/"/>
-   </url>
-
    <requires>
       <import plugin="org.eclipse.help"/>
       <import plugin="org.eclipse.ui"/>