remove rebaselined tests from ignore file

expectations/gm/ignored-tests.txt

Index: expectations/gm/ignored-tests.txt
diff --git a/expectations/gm/ignored-tests.txt b/expectations/gm/ignored-tests.txt
index b92e5f77f89726d1a53ec4c52919be997c2634c1..9a895b5021f3c4a29cf3c449cfa545b824aac42f 100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -42,21 +42,10 @@ inverse_paths
 # I will likely just delete the GM.
 canvas-layer-state
 
-# yunchao: https://codereview.chromium.org/204143004/
-# This change add some cases to bitmapshader to avoid potential drawing error for kA8_Config
-bitmapshaders
-
 # reed: https://codereview.chromium.org/233943002
 # GM itself may be changed
 image-surface
 
-# yunchao: https://codereview.chromium.org/221953002/
-# This change resized the canvas for some GM cases. It is better to show the
-# visual difference in viewer.html for these cases.
-aaclip
-composeshader
-peekpixels
-
 # humper: https://codereview.chromium.org/248613004/
 # Changed the test in a few ways, will need rebaselining.
 simpleblurroundrect