disable memory tests (#310)

disable fine-grain and coarse-grain memory testst until a fix is
available in ROCm 7.1 and/or our CI image. Otherwise we might miss other
errors due to constant CI failures.

[ROCm/rocshmem commit: 4fc5541d78]

projects/rocshmem/scripts/unit_tests/driver.sh

@@ -76,7 +76,7 @@ case $mode in
     all)
         test_with_two_pes="IPCImplSimpleCoarseTestFixture/*:IPCImplSimpleFineTestFixture/*:IPCImplTiledFineTestFixture/*:DegenerateTiledFine.*"
         run_mpirun 4 "-$test_with_two_pes"
-        run_mpirun 2 "$test_with_two_pes"
+        #run_mpirun 2 "$test_with_two_pes"
         ;;
     custom)
         # Check if ranks is a positive integer