github: don't build proxy

.github/workflows/ccpp.yml

@@ -20,7 +20,7 @@ jobs:
       run: |
         cd argon2 && make && sudo make install && cd ..
     - name: configure
-      run: ./configure --enable-proxy-client --enable-proxy-server --enable-push-notifications
+      run: ./configure
     - name: make
       run: make
     - name: make check