Removed num_modules flag from RL training in demo (#149)
Removed num_modules flag from RL training in demo (#149)

We refactored this flag a while ago to be specified in the gin config
for the relevant problem to improve reproducibility, especially in the
regalloc case, but I forgot to remove the flag from the demo. This patch
removes the flag from the demo, making everything (hopefully) plug and
play.
google/ml-compiler-opt,google/ml-compiler-opt