Stop rescuing NameError

This clause originated in 4a36c56ac7b36904712aa472b9bd50ef1b0c80d3,
attempting to catch NameErrors raised by const_defined? calls earlier in
the method body. Those const_defined? calls have since been moved out of
the body of the begin block.

Stop rescuing NameError here, which will make true programming errors in
formulae easier to debug.

Library/Homebrew/formulary.rb

@@ -74,11 +74,7 @@ class Formulary
       STDERR.puts "#{$0} (#{self.class.name}): loading #{path}" if ARGV.debug?
       begin
         require(path)
-      rescue NoMethodError
-        # This is a programming error in an existing formula, and should not
-        # have a "no such formula" message.
-        raise
-      rescue LoadError, NameError => e
+      rescue LoadError => e
         raise FormulaUnavailableError, name, e.backtrace
       end
     end