opencoarrays: new version (#2734)

* add version 1.8.0

* remove depends_on('cmake') as it is now unecessary

* remove 'coarrays' as a virtual package

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

@@ -36,14 +36,12 @@ class Opencoarrays(CMakePackage):
     homepage = "http://www.opencoarrays.org/"
     url      = "https://github.com/sourceryinstitute/opencoarrays/releases/download/1.7.4/OpenCoarrays-1.7.4.tar.gz"
 
+    version('1.8.0', 'ca78d1507b2a118c75128c6c2e093e27')
     version('1.7.4', '85ba87def461e3ff5a164de2e6482930')
     version('1.6.2', '5a4da993794f3e04ea7855a6678981ba')
 
-    depends_on('cmake', type='build')
     depends_on('mpi')
 
-    provides('coarrays')
-
     def cmake_args(self):
         args = []
         args.append("-DCMAKE_C_COMPILER=%s" % self.spec['mpi'].mpicc)