dev-requirements.txt: Remove obsolete comments

This also fixes an error with pylint in setup.py:
setup.py:226:19: R1718: Consider using a set comprehension (consider-using-set-comprehension)

1 files changed, 3 insertions, 5 deletions

diff --git a/setup.py b/setup.py
index 700d9df96..35b8245c9 100755
--- a/setup.py
+++ b/setup.py
@@ -221,10 +221,8 @@ def get_cmdclass():
 #####################################################
 #               Gather requirements                 #
 #####################################################
-setup_requires = set(['pytest-runner'])
 with open('dev-requirements.txt') as dev_reqs:
-    dev_requires = set([line for line in dev_reqs.read().split('\n')
-                        if not line.strip().startswith('#')])
+    dev_requires = dev_reqs.read().splitlines()
 
 
 #####################################################
@@ -269,6 +267,6 @@ setup(name='BuildStream',
           'grpcio >= 1.10',
       ],
       entry_points=bst_install_entry_points,
-      setup_requires=list(setup_requires),
-      tests_require=list(dev_requires - setup_requires),
+      setup_requires=['pytest-runner'],
+      tests_require=dev_requires,
       zip_safe=False)