Don't generate stub files when -fno-code is given.

ghc/compiler/main/CodeOutput.lhs

@@ -61,11 +61,7 @@ codeOutput :: DynFlags
 	   -> IO (Bool{-stub_h_exists-}, Bool{-stub_c_exists-})
 
 codeOutput dflags this_mod location foreign_stubs pkg_deps flat_abstractC
-    | HscNothing <- hscTarget dflags
-      -- We aren't interested in any code when HscNothing is our target.
-    = return (False, False)
-    | otherwise
-    =
+  = 
     -- You can have C (c_output) or assembly-language (ncg_output),
     -- but not both.  [Allowing for both gives a space leak on
     -- flat_abstractC.  WDP 94/10]