Removing RPC_PROTOCOL from gitlab-ci config

      -DGKFS_INSTALL_TESTS:BOOL=ON

      -DGKFS_ENABLE_FORWARDING:BOOL=ON

      -DGKFS_ENABLE_AGIOS:BOOL=ON

      -DRPC_PROTOCOL="ofi+sockets"

      -DCMAKE_PREFIX_PATH=${DEPS_INSTALL_PATH}

      -DCMAKE_INSTALL_PREFIX=${INSTALL_PATH}

      ${CI_PROJECT_DIR}