remove rebaselined tests from ignore file

expectations/gm/ignored-tests.txt

 # Failures of any GM tests listed in this file will be ignored [1], as
 # if they had been marked "ignore-failure": true in the per-builder
 # expected-results.json files.
 #
 # The idea is that, if you modify a GM test in such a way that you know it will
 # require rebaselines on multiple platforms, you should add that test's name to
 # this list within the same CL that modifies the test.
 # Then, AS SOON AS POSSIBLE, you should rebaseline the tests (they will show up
 # as status "failure-ignored") and remove the line you added to this file.
 # If there are any lingering failures that need to be suppressed (ignored), you
@@ skipping 24 matching lines @@
 
 # This GM has probably always drawn incorrectly. We need to clarify the API
 # http://skbug.com/2222 : Inverse filled paths get inverse stroked
 inverse_paths
 
 # reed: https://codereview.chromium.org/190723004/
 # This change removes an API that this GM was testing. If/when it lands and sticks,
 # 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
 
 # senorblanco: http://YOUR_CODE_REVIEW_HERE/
 # Added a new test case; reduced the text bitmap size
 tileimagefilter