ci: remove workaround running test in py311 instead of py312

.github/workflows/test.yaml

@@ -86,14 +86,6 @@ jobs:
           - os: windows-2022
             python-version: "3.8"
             pip-extras: lab
-
-          # FIXME: If https://github.com/jupyter/notebook/pull/7305 gets merged
-          #        and released, we can test "classic" with python 3.12 as well,
-          #        but until then we exclude it from being run as a Python 3.12
-          #        test and include it as a Python 3.11 test.
-          - os: ubuntu-22.04
-            python-version: "3.12"
-            pip-extras: classic
         include:
           # this test is manually updated to reflect the lower bounds of
           # versions from dependencies
@@ -106,11 +98,6 @@ jobs:
               tornado==6.1.0
               traitlets==5.1.0
 
-          # Workaround for excluded 3.12 test mentioned in a FIXME above
-          - os: ubuntu-22.04
-            python-version: "3.11"
-            pip-extras: classic
-
     steps:
       - uses: actions/checkout@v4