Remove version cap for cornice, now that we require python3

setup.py

@@ -68,18 +68,16 @@ requires = [
     # (still, probably a better idea is to refactor so we can use 0.9)
     'webhelpers2_grid==0.1',            # 0.1
 
-    # TODO: remove version cap once we can drop support for python 2.x
-    'cornice<5.0',                      # 3.4.2                 4.0.1
-
     # TODO: remove once their bug is fixed?  idk what this is about yet...
     'deform<2.0.15',                    # 2.0.14
 
-    # TODO: cornice<5 requires pyramid<2 (see above)
+    # TODO: remove this cap and address warnings that follow
     'pyramid<2',                        # 1.3b2                 1.10.8
 
     'asgiref',                          # 3.2.3
     'colander',                         # 1.7.0
     'ColanderAlchemy',                  # 0.3.3
+    'cornice',                          # 3.4.2
     'humanize',                         # 0.5.1
     'Mako',                             # 0.6.2
     'markdown',                         # 3.3.3