Removing singletest from test_branches

Author: jsiirola

.github/workflows/test_branches.yml

@@ -95,14 +95,6 @@ jobs:
           PYENV: conda
           PACKAGES: openmpi mpi4py
 
-        - os: ubuntu-latest
-          python: '3.11'
-          other: /singletest
-          category: "-m 'neos or importtest'"
-          skip_doctest: 1
-          TARGET: linux
-          PYENV: pip
-
         - os: ubuntu-latest
           python: '3.10'
           other: /cython