Remove catdoc

Closes Homebrew/homebrew#26616.

Formula/catdoc.rb

@@ -1,24 +0,0 @@
-require 'formula'
-
-class Catdoc < Formula
-  homepage 'http://wagner.pp.ru/~vitus/software/catdoc/'
-  url 'http://ftp.wagner.pp.ru/pub/catdoc/catdoc-0.94.2.tar.gz'
-  sha1 '50ce9d7cb24ad6b10a856c9c24183e2b0a11ca04'
-
-  fails_with :clang do
-    cause "The source uses undocumented behavior (decrementing null)."
-  end
-
-  def install
-    # catdoc configure says it respects --mandir=, but does not.
-    ENV['man1dir'] = man1
-    system "./configure", "--disable-debug", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}"
-    # The INSTALL file confuses make on case insensitive filesystems.
-    system "mv INSTALL INSTALL.txt"
-    system "make"
-    # There is a race condition in the charsets/Makefile install target. The following line solves it.
-    system "make -C charsets install-dirs"
-    system "make install"
-  end
-end