Merge pull request #726 from citibeth/efischer/160402-Qt

Removed useless url in qt

var/spack/repos/builtin/packages/qt/package.py

@@ -4,7 +4,6 @@
 class Qt(Package):
     """Qt is a comprehensive cross-platform C++ application framework."""
     homepage = 'http://qt.io'
-    url      = 'http://download.qt.io/archive/qt/5.5/5.5.1/single/qt-everywhere-opensource-src-5.5.1.tar.gz'
 
     version('5.5.1',  '59f0216819152b77536cf660b015d784')
     version('5.4.2',  'fa1c4d819b401b267eb246a543a63ea5')