Update MG Benchmark List (#4516)

This PR partially addresses #4504

---

### Changes

1. Remove `force_atlas2` from the list of benchmarks being run inside `benchmarks/cugraph/pytest-based/bench_algos.py` . This algorithm is not designed to be used in an MG workflow. It was being skipped previously, but it would make more sense to remove it from the list of algos.

2. Mark `tests/community/test_triangle_count_mg.py` to be skipped in the nightly MNMG tests while a bug is being investigated. This will prevent the slowdown of subsequent tests in the meantime. The test will be re-introduced once there is a fix.

Authors:
  - Ralph Liu (https://github.com/nv-rliu)

Approvers:
  - Rick Ratzel (https://github.com/rlratzel)

URL: #4516

benchmarks/cugraph/pytest-based/bench_algos.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2020-2023, NVIDIA CORPORATION.
+# Copyright (c) 2020-2024, NVIDIA CORPORATION.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -315,12 +315,6 @@ def bench_bfs(gpubenchmark, graph):
     gpubenchmark(bfs, graph, start)
 
 
-def bench_force_atlas2(gpubenchmark, graph):
-    if is_graph_distributed(graph):
-        pytest.skip("distributed graphs are not supported")
-    gpubenchmark(cugraph.force_atlas2, graph, max_iter=50)
-
-
 def bench_sssp(gpubenchmark, graph):
     sssp = dask_cugraph.sssp if is_graph_distributed(graph) else cugraph.sssp
     start = graph.edgelist.edgelist_df["src"][0]

python/cugraph/cugraph/tests/community/test_triangle_count_mg.py

@@ -21,6 +21,9 @@
 from cugraph.datasets import karate, dolphins
 
 
+pytestmark = pytest.mark.skip(reason="Skipping until MG bug is resolved")
+
+
 # =============================================================================
 # Pytest Setup / Teardown - called for each test function
 # =============================================================================