Remove broken j.u.logging sample

Logging works out of the box now so a complex sample app is not
much useful for most users.

Bug: issue 8971
Change-Id: I037bb9a551f9e5f1ead0cddc0f25578da894e293

Author: gkdn

distro-source/core/src/samples/build.xml

@@ -4,7 +4,6 @@
     <ant target="${target}" dir="DynaTable"/>
     <ant target="${target}" dir="Hello"/>
     <ant target="${target}" dir="JSON"/>
-    <ant target="${target}" dir="LogExample"/>
     <ant target="${target}" dir="Mail"/>
     <ant target="${target}" dir="Showcase"/>
   </target>

eclipse/.gitignore

@@ -11,5 +11,5 @@ bin/
 # Generated by GWT tests
 gwt-unitCache/
 www-test/
-# LogExample and code-museum have a war folder so don't remove 'user/'
+# code-museum have a war folder so don't remove 'user/'
 user/war/

eclipse/samples/LogExample/.checkstyle

@@ -22,10 +22,6 @@
     <gwt.ant dir="json" />
   </target>
 
-  <target name="logexample" description="Build logexample">
-    <gwt.ant dir="logexample" />
-  </target>
-
   <target name="mail" description="Build mail">
     <gwt.ant dir="mail" />
   </target>
@@ -51,7 +47,6 @@
     <antcall target="dynatablerf" />
     <antcall target="hello" />
     <antcall target="json" />
-    <antcall target="logexample" />
     <antcall target="mail" />
     <antcall target="mobilewebapp" />
     <antcall target="showcase" />