[AMDGPU][Offload] Exclude flaky test on one bot (#385)

This test is for some unknown reason quite flaky on this particular
machine. Excluding it.

---------

Co-authored-by: Michael Kruse <[email protected]>

Author: jplehr

buildbot/osuosl/master/config/builders.py

@@ -2021,7 +2021,8 @@
                             "-DTEST_SUITE_SOLLVEVV_OFFLOADING_CFLAGS=-fopenmp;-fopenmp-targets=amdgcn-amd-amdhsa;-Xopenmp-target=amdgcn-amd-amdhsa;-march=gfx906",
                             "-DTEST_SUITE_SOLLVEVV_OFFLOADING_LDLAGS=-fopenmp;-fopenmp-targets=amdgcn-amd-amdhsa;-Xopenmp-target=amdgcn-amd-amdhsa;-march=gfx906",
                         ],
-                        add_lit_checks=["check-offload", "check-libc-amdgcn-amd-amdhsa"]
+                        add_lit_checks=["check-offload", "check-libc-amdgcn-amd-amdhsa"],
+                        add_openmp_lit_args=["--filter-out=offloading/pgo1.c"],
                     )},
 
     {'name' : "openmp-offload-amdgpu-clang-flang",