Remove the "implement better version of existing tools" open project

This project doesn't really relate to improving Clang itself and it
contained stale suggestions like working on code modification
functionality in clang-format.

clang/www/OpenProjects.html

@@ -95,21 +95,6 @@ <h1>Open Clang Projects</h1>
 from source code. The tool is in early stages of development and could use more
 dedicated effort to complete the implementation.</li>
 
-<li><b>Use clang libraries to implement better versions of existing tools</b>:
-Clang is built as a set of libraries, which means that it is possible to
-implement capabilities similar to other source language tools, improving them
-in various ways.  Three examples are <a
-href="https://github.com/distcc">distcc</a>, the <a
-href="http://delta.tigris.org/">delta testcase reduction tool</a>, and the
-"indent" source reformatting tool.
-distcc can be improved to scale better and be more efficient.  Delta could be
-faster and more efficient at reducing C-family programs if built on the clang
-preprocessor. The clang-based indent replacement,
-<a href="https://clang.llvm.org/docs/ClangFormat.html">clang-format</a>,
-could be taught to handle simple structural rules like those in <a
-href="https://llvm.org/docs/CodingStandards.html#use-early-exits-and-continue-to-simplify-code">the LLVM coding
-standards</a>.</li>
-
 <li><b>Self-testing using clang</b>: There are several neat ways to
 improve the quality of clang by self-testing. Some examples:
 <ul>