Use NVIDIA/cuCollections repo again (rapidsai#284)

Safe to switch this back now that NVIDIA/cuCollections#90 is merged.

~edit: DO NOT MERGE until NVIDIA/cuCollections#91 is merged.~

edit 2: ready to merge again

Authors:
  - Paul Taylor (https://github.com/trxcllnt)

Approvers:
  - Dante Gama Dessavre (https://github.com/dantegd)

URL: rapidsai#284

cpp/cmake/thirdparty/get_cuco.cmake

@@ -21,21 +21,17 @@ function(find_and_configure_cuco VERSION)
     endif()
 
     rapids_cpm_find(cuco ${VERSION}
-      GLOBAL_TARGETS cuco cuco::cuco
+      GLOBAL_TARGETS      cuco::cuco
       BUILD_EXPORT_SET    raft-exports
       INSTALL_EXPORT_SET  raft-exports
       CPM_ARGS
-        GIT_REPOSITORY https://github.com/trxcllnt/cuCollections.git
+        GIT_REPOSITORY https://github.com/NVIDIA/cuCollections.git
         GIT_TAG        dev
         OPTIONS        "BUILD_TESTS OFF"
                        "BUILD_BENCHMARKS OFF"
                        "BUILD_EXAMPLES OFF"
     )
 
-    if(NOT TARGET cuco::cuco)
-      add_library(cuco::cuco ALIAS cuco)
-    endif()
-
 endfunction()
 
 find_and_configure_cuco(0.0.1)