removing sloeber gnuarm references

Author: jantje

io.sloeber.feature/feature.xml

@@ -32,7 +32,6 @@ Trump211
    </license>
 
    <url>
-      <update label="Sloeber V4 update site" url="http://sloeber.io/gnuarmeclipse/stable"/>
       <discovery label="jan&apos;s site with plenty of documentation" url="http://eclipse.baeyens.it/"/>
    </url>
 

io.sloeber.parent/pom.xml

@@ -441,7 +441,7 @@
     <repository>
       <id>gnuarm</id>
       <layout>p2</layout>
-      <url>http://sloeber.io/gnuarmeclipse/stable</url>
+      <url>http://gnuarmeclipse.sourceforge.net/updates</url>
     </repository>
   </repositories>