[Executable] Get rid of redundant run calls

lib/cocoapods/executable.rb

@@ -82,17 +82,8 @@ module Pod
       Open3.popen3(bin, *command) do |i, o, e, t|
         out_reader = Thread.new { while s = o.gets; stdout << s; end }
         err_reader = Thread.new { while s = e.gets; stderr << s; end }
-
         i.close
-
-        run_readers = lambda do
-          [out_reader, err_reader].each do |reader|
-            reader.run if reader.alive?
-          end
-        end
-
-        run_readers.call
-        t.value.tap { run_readers.call }
+        t.value
       end
     end