shibboleth-sp: remove caveats. (#36290)

See https://github.com/Homebrew/homebrew-core/issues/31510.

Formula/shibboleth-sp.rb

@@ -56,18 +56,6 @@ class ShibbolethSp < Formula
     (var/"cache/shibboleth").mkpath
   end
 
-  def caveats
-    mod = build.with?("apache-22") ? "mod_shib_22.so" : "mod_shib_24.so"
-    <<~EOS
-      You must manually edit httpd.conf to include
-      LoadModule mod_shib #{opt_lib}/shibboleth/#{mod}
-      You must also manually configure
-        #{etc}/shibboleth/shibboleth2.xml
-      as per your own requirements. For more information please see
-        https://wiki.shibboleth.net/confluence/display/EDS10/3.1+Configuring+the+Service+Provider
-    EOS
-  end
-
   plist_options :startup => true, :manual => "shibd"
 
   def plist; <<~EOS