Add MG Hits and MG Neighborhood_sampling to benchmarks

[jnke2016]

This PR

1. Adds MG Hits and MG Neighborhood sampling to our list of algos to benchmarks in the nightlies
2. Drops the legacy renumbering not needed in the C/Pylibcugraph path

[codecov-commenter]

Codecov Report

Merging #2254 (93c88e1) into branch-22.06 (3506893) will decrease coverage by 2.86%.
The diff coverage is 56.77%.

❗ Current head 93c88e1 differs from pull request most recent head 445d019. Consider uploading reports for the commit 445d019 to get more accurate results

@@               Coverage Diff                @@
##           branch-22.06    #2254      +/-   ##
================================================
- Coverage         72.77%   69.90%   -2.87%     
================================================
  Files               173      175       +2     
  Lines             11423    11517      +94     
================================================
- Hits               8313     8051     -262     
- Misses             3110     3466     +356     

Impacted Files	Coverage Δ
python/cugraph/cugraph/__init__.py	100.00% <ø> (ø)
python/cugraph/cugraph/dask/link_analysis/hits.py	18.75% <0.00%> (+0.38%)	⬆️
...aph/cugraph/dask/sampling/neighborhood_sampling.py	0.00% <0.00%> (ø)
.../cugraph/tests/mg/test_mg_neighborhood_sampling.py	0.00% <ø> (-36.37%)	⬇️
python/cugraph/cugraph/structure/number_map.py	65.83% <10.52%> (-1.20%)	⬇️
...ure/graph_implementation/simpleDistributedGraph.py	23.02% <21.05%> (-0.17%)	⬇️
python/cugraph/cugraph/structure/symmetrize.py	58.92% <56.52%> (-6.53%)	⬇️
python/cugraph/cugraph/structure/graph_classes.py	78.46% <71.42%> (-0.08%)	⬇️
...on/cugraph/cugraph/centrality/degree_centrality.py	81.81% <81.81%> (ø)
...raph/structure/graph_implementation/simpleGraph.py	74.15% <90.00%> (-0.15%)	⬇️
... and 28 more

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[rlratzel]

@gpucibot merge