Remove mpi-flat test addition

- this test is failing and should be in another PR

tests/CMakeLists.txt

@@ -35,19 +35,6 @@ set(_base_environment
     "LD_LIBRARY_PATH=${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}:${OMNITRACE_DYNINST_API_RT_DIR}:$ENV{LD_LIBRARY_PATH}"
     )
 
-set(_flat_environment
-    "OMNITRACE_USE_PERFETTO=ON"
-    "OMNITRACE_USE_TIMEMORY=ON"
-    "OMNITRACE_TIME_OUTPUT=OFF"
-    "OMNITRACE_FLAT_PROFILE=ON"
-    "OMNITRACE_COUT_OUTPUT=ON"
-    "OMNITRACE_TIMEMORY_COMPONENTS=wall_clock,trip_count"
-    "OMP_PROC_BIND=spread"
-    "OMP_PLACES=threads"
-    "OMP_NUM_THREADS=2"
-    "LD_LIBRARY_PATH=${PROJECT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}:${OMNITRACE_DYNINST_API_RT_DIR}:$ENV{LD_LIBRARY_PATH}"
-    )
-
 set(_lock_environment
     "OMNITRACE_USE_SAMPLING=OFF"
     "OMNITRACE_USE_PROCESS_SAMPLING=OFF"
@@ -623,28 +610,6 @@ omnitrace_add_test(
         "(/[A-Za-z-]+/perfetto-trace-0.proto).*(/[A-Za-z-]+/wall_clock-0.txt')"
     REWRITE_RUN_FAIL_REGEX "-[0-9][0-9]+.(json|txt|proto)")
 
-omnitrace_add_test(
-    SKIP_RUNTIME SKIP_SAMPLING
-    NAME "mpi-flat"
-    TARGET mpi-example
-    MPI ON
-    NUM_PROCS 4
-    REWRITE_ARGS
-        -e
-        -v
-        2
-        --label
-        file
-        line
-        return
-        args
-        --min-instructions
-        0
-    ENVIRONMENT "${_flat_environment};OMNITRACE_USE_SAMPLING=OFF"
-    REWRITE_RUN_PASS_REGEX
-        ">>> main(.*\n.*)>>> MPI_Init_thread(.*\n.*)>>> MPI_Comm_size(.*\n.*)>>> MPI_Comm_rank(.*\n.*)>>> MPI_Barrier(.*\n.*)>>> MPI_Alltoall(.*\n.*)>>> MPI_Comm_dup(.*\n.*)>>> MPI_Comm_group(.*\n.*)>>> MPI_Group_incl(.*\n.*)>>> pthread_join"
-    )
-
 omnitrace_add_test(
     NAME lulesh
     TARGET lulesh