formula_installer: Don't check devtools if pouring

Library/Homebrew/formula_installer.rb

@@ -219,6 +219,10 @@ class FormulaInstaller
   end
 
   def install
+    if DevelopmentTools.installed? && !pour_bottle?
+      Install.check_development_tools
+    end
+
     # not in initialize so upgrade can unlink the active keg before calling this
     # function but after instantiating this class so that it can avoid having to
     # relink the active keg if possible (because it is slow).

Library/Homebrew/install.rb

@@ -47,7 +47,6 @@ module Homebrew
     def perform_preinstall_checks
       check_ppc
       check_writable_install_location
-      check_development_tools if DevelopmentTools.installed?
       check_cellar
     end
   end