Merge pull request #157 from pllim/unignore-ginga-ioloop

MNT: Un-ignore ioloop DeprecationWarning from Ginga

Author: pllim

setup.cfg

@@ -13,8 +13,6 @@ filterwarnings =
     ignore:zmq\.eventloop\.ioloop is deprecated in pyzmq 17:DeprecationWarning
     ignore:Widget.* is deprecated:DeprecationWarning
     ignore:Marker set named:UserWarning
-    # https://github.com/ejeschke/ginga/issues/1033
-    ignore:There is no current event loop:DeprecationWarning
 
 [flake8]
 # E501: line too long