Merge pull request #5135 from martin-frbg/ghwf-n2

CI: remove the express NeoverseN2 target from the Cobalt100 job in the gh workflow

.github/workflows/dynamic_arch.yml

@@ -372,7 +372,7 @@ jobs:
           
       - name: Build OpenBLAS
         run: |
-          make -j${nproc} TARGET=NEOVERSEN2
-          make -j${nproc} TARGET=NEOVERSEN2 lapack-test
+          make -j${nproc} 
+          make -j${nproc} lapack-test