Removed cask_reason from missing_formula.reason

- It won't output anything during a failed 'brew install'
- There's a seperate call to MissingFormula.cask_reason
  when 'brew info' is executed on a cask.

Library/Homebrew/cmd/info.rb

@@ -89,7 +89,7 @@ module Homebrew
           end
           ofail e.message
           # No formula with this name, try a missing formula lookup
-          if (reason = MissingFormula.reason(f))
+          if (reason = MissingFormula.reason(f) || MissingFormula.cask_reason(f))
             $stderr.puts reason
           end
         end

Library/Homebrew/missing_formula.rb

@@ -7,8 +7,7 @@ module Homebrew
   module MissingFormula
     class << self
       def reason(name, silent: false)
-        cask_reason(name, silent: silent) || blacklisted_reason(name) ||
-          tap_migration_reason(name) || deleted_reason(name, silent: silent)
+        blacklisted_reason(name) || tap_migration_reason(name) || deleted_reason(name, silent: silent)
       end
 
       def blacklisted_reason(name)