Remove pyflakes error

Status Job ID Name Coverage
  Build
failed #15691
build:2.7

failed #15692
build:3

failed #15648
build:2.7

failed #15687
build:2.7

failed #15649
build:3

failed #15688
build:3

 
  Test
skipped #15651
allowed to fail
lint:2.7
skipped #15655
allowed to fail
lint:3
skipped #15650
pyflakes:2.7
skipped #15654
pyflakes:3
skipped #15652
unittests:2.7
skipped #15656
unittests:3
skipped #15653
allowed to fail
unittests-modules:2.7
skipped #15657
allowed to fail
unittests-modules:3
 
  Deploy
skipped #15658
doc:2.7
skipped #15659
doc:3
 
Name Stage Failure
failed
build:2.7 Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job trace
failed
build:3 Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job trace