[CI] Remove @disjoin_base hacks

Author: srittau

.github/workflows/daily.yml

@@ -50,9 +50,6 @@ jobs:
           check-latest: true
       - name: Install dependencies
         run: pip install -r requirements-tests.txt
-      # Temporary to get @disjoint_base support; can remove once mypy 1.18 is released
-      - name: Install mypy from git
-        run: pip install git+https://github.com/python/mypy.git@116b92bae7b5dbf5e6bd36fd9b0c6804973e5554
       - name: Run stubtest
         run: python tests/stubtest_stdlib.py
 

.github/workflows/stubtest_stdlib.yml

@@ -46,8 +46,5 @@ jobs:
           check-latest: true
       - name: Install dependencies
         run: pip install -r requirements-tests.txt
-      # Temporary to get @disjoint_base support; can remove once mypy 1.18 is released
-      - name: Install mypy from git
-        run: pip install git+https://github.com/python/mypy.git@116b92bae7b5dbf5e6bd36fd9b0c6804973e5554
       - name: Run stubtest
         run: python tests/stubtest_stdlib.py