ci: drop unused python exclusions

Drop some exclusions for python 3.6, this version is not tested in the
first place anyway so these are redundant.

Signed-off-by: Fabio Baltieri <[email protected]>

Author: fabiobaltieri

.github/workflows/devicetree_checks.yml

@@ -28,11 +28,6 @@ jobs:
       matrix:
         python-version: ['3.10', '3.11', '3.12']
         os: [ubuntu-22.04, macos-14, windows-2022]
-        exclude:
-        - os: macos-14
-          python-version: 3.6
-        - os: windows-2022
-          python-version: 3.6
     steps:
     - name: checkout
       uses: actions/checkout@v4

.github/workflows/west_cmds.yml

@@ -31,11 +31,6 @@ jobs:
       matrix:
         python-version: ['3.10', '3.11', '3.12']
         os: [ubuntu-22.04, macos-14, windows-2022]
-        exclude:
-        - os: macos-14
-          python-version: 3.6
-        - os: windows-2022
-          python-version: 3.6
     steps:
     - name: checkout
       uses: actions/checkout@v4