Remove cryptography installation for PyPy v3.11

Removed installation of cryptography for PyPy v3.11.

Author: cclauss

.github/workflows/ci.yml

@@ -64,8 +64,6 @@ jobs:
           python-version: ${{ matrix.python-version }}
           cache: 'pip'
           cache-dependency-path: 'requirements-dev.txt'
-      - run: pip install cryptography  # TODO(cclauss): Fix requirements for PyPy v3.11
-        if: matrix.python-version == 'pypy-3.11'
       - run: pip install . -r requirements-dev.txt
       - run: make test