Fix func_backslash.mk
diff --git a/runtest.rb b/runtest.rb
index 5b517dc..31cc176 100755
--- a/runtest.rb
+++ b/runtest.rb
@@ -90,6 +90,7 @@
 
 def normalize_ninja_log(log, mk)
   log.gsub!(/^\[\d+\/\d+\] .*\n/, '')
+  log.gsub!(/^ninja: no work to do\.\n/, '')
   if mk =~ /err_error_in_recipe.mk/
     # This test expects ninja fails. Strip ninja specific error logs.
     log.gsub!(/^FAILED: .*\n/, '')
diff --git a/testcase/func_backslash.mk b/testcase/func_backslash.mk
index 5af5285..7f3ece3 100644
--- a/testcase/func_backslash.mk
+++ b/testcase/func_backslash.mk
@@ -1,5 +1,3 @@
-# TODO(ninja): Fix - ninja emits "no work to do"
-
 $(info\
  PASS)