[content/test/gpu] Run pylint check of gpu tests in unittest instead of PRESUBMIT

content/test/gpu/pylintrc

Index: content/test/gpu/pylintrc
diff --git a/content/test/gpu/pylintrc b/content/test/gpu/pylintrc
index a197ea10759467674203cf953c2f13cfdb1801b3..52820691f860e06a49d2773b8f43820cec1ba98e 100644
--- a/content/test/gpu/pylintrc
+++ b/content/test/gpu/pylintrc
@@ -2,7 +2,7 @@
 
 # Disable the message, report, category or checker with the given id(s).
 # TODO(gpu-team): Shrink this list to as small as possible.
-disable=abstract-class-little-used,abstract-class-not-used,bad-continuation,broad-except,fixme,global-statement,interface-not-implemented,invalid-name,locally-disabled,locally-enabled,missing-docstring,no-self-use,protected-access,star-args,too-few-public-methods,too-many-arguments,too-many-branches,too-many-function-args,too-many-instance-attributes,too-many-lines,too-many-locals,too-many-public-methods,too-many-return-statements,too-many-statements,unused-argument
+disable=abstract-class-little-used,abstract-class-not-used,bad-continuation,broad-except,fixme,global-statement,interface-not-implemented,invalid-name,locally-disabled,locally-enabled,missing-docstring,no-self-use,protected-access,star-args,too-few-public-methods,too-many-arguments,too-many-branches,too-many-function-args,too-many-instance-attributes,too-many-lines,too-many-locals,too-many-public-methods,too-many-return-statements,too-many-statements,unused-argument, duplicate-code
 
 
 [REPORTS]