Overriding #initialize is not supported, so drop late validation

Library/Homebrew/formula.rb

@@ -370,8 +370,6 @@ class Formula
   # yields self with current working directory set to the uncompressed tarball
   # @private
   def brew
-    validate_attributes :name, :version
-
     stage do
       begin
         patch

Library/Homebrew/test/test_formula_validation.rb

@@ -46,14 +46,6 @@ class FormulaValidationTests < Homebrew::TestCase
     end
   end
 
-  def test_validates_when_initialize_overridden
-    assert_invalid :name do
-      formula do
-        def initialize(*); end
-      end.brew {}
-    end
-  end
-
   def test_devel_only_valid
     f = formula do
       devel do