cuco isn't a cudf dependency when we are built shared

[robertmaynard]

With the corrections in #10545 we didn't install the cuco headers / cmake files as they aren't needed for shared builds. But we forgot to remove the find_package(cuco) call from the generated cudf-config.cmake.

[codecov]

Codecov Report

Merging #10662 (82fe1ab) into branch-22.06 (3c13ef1) will increase coverage by 0.03%.
The diff coverage is 89.52%.

@@               Coverage Diff                @@
##           branch-22.06   #10662      +/-   ##
================================================
+ Coverage         86.33%   86.37%   +0.03%     
================================================
  Files               140      142       +2     
  Lines             22289    22356      +67     
================================================
+ Hits              19244    19310      +66     
- Misses             3045     3046       +1     

Impacted Files	Coverage Δ
python/cudf/cudf/core/algorithms.py	90.47% <ø> (ø)
python/cudf/cudf/core/groupby/groupby.py	91.72% <ø> (+0.22%)	⬆️
python/cudf/cudf/core/multiindex.py	92.14% <ø> (ø)
python/cudf/cudf/core/series.py	95.28% <ø> (ø)
python/cudf/cudf/utils/cudautils.py	59.83% <ø> (ø)
python/cudf/cudf/utils/ioutils.py	79.60% <ø> (ø)
python/cudf/cudf/utils/utils.py	90.28% <ø> (ø)
python/cudf/cudf/core/frame.py	93.67% <56.52%> (-1.09%)	⬇️
python/dask_cudf/dask_cudf/tests/utils.py	90.90% <90.90%> (ø)
python/cudf/cudf/core/column/lists.py	92.79% <100.00%> (+1.38%)	⬆️
... and 12 more

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[robertmaynard]

@gpucibot merge