Remove an uninteresting note

DougGregor · DougGregor · commit 1288408984f1 · 2013-02-05T21:13:55.000Z
llvm-svn: 174441
diff --git a/clang/NOTES.txt b/clang/NOTES.txt
@@ -2,9 +2,6 @@
 // Random Notes
 //===---------------------------------------------------------------------===//
 
-C90/C99/C++ Comparisons:
-http://david.tribble.com/text/cdiffs.htm
-
 //===---------------------------------------------------------------------===//
 
 To time GCC preprocessing speed without output, use:
