Move htop to Homebrew-alt

The OS X fork of htop is unofficial, and has not been updated to work
consistently on Snow Leopard or Lion.

Formula/htop.rb

@@ -1,24 +0,0 @@
-require 'formula'
-
-class Htop < Formula
-  head 'https://github.com/cynthia/htop-osx.git'
-  homepage 'http://htop.sourceforge.net/'
-
-  def install
-    system "./autogen.sh"
-    system "./configure", "--disable-debug", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}"
-    system "make", "install", "DEFAULT_INCLUDES='-iquote .'"
-    rm_rf "#{share}/applications" # Don't need Gnome support on OS X
-    rm_rf "#{share}/pixmaps"
-  end
-
-  def caveats; <<-EOS.undent
-    For htop to display correctly all running processes, it needs to run as root.
-    If you don't want to `sudo htop` every time, change the owner and permissions:
-        cd #{bin}
-        chmod 6555 htop
-        sudo chown root htop
-    EOS
-  end
-end