remove f-strings

3 jobs for conda-forge-tensorflow-feedstock in 38 minutes and 32 seconds (queued for 8 seconds)
Status Job ID Name Coverage
  Build
canceled #217822
docker-build
build_linux_64_python3.6.____cpython

00:38:32

canceled #217823
docker-build
build_linux_64_python3.7.____cpython

00:38:32

canceled #217824
docker-build
build_linux_64_python3.8.____cpython

00:38:31