tfs_encmain updates

[zkokaja]

• remove blocks of commented out old code
• make the number processes for parallel computing configurable
  • bonus: use all available processes to the slurm job iff on a compute node, otherwise just whatever is in args
• consolidate functions parallel_encoding and process_sig_electrodes

[zkokaja]

@VeritasJoker Do not hard code number of processes p = Pool(4) # multiprocessing Suggestion: replace with p = Pool(processes=multiprocessing.cpu_count()), but only when running on a compute node and ensure cpu_count() returns only the requested number of cores. Also print the number of chosen processes so we can see what it chose

[zkokaja]

@VeritasJoker Remove unused functions in encoding main and utils (and remove the import statements for them)

• Don't remove load_header() from tfsenc_utils
• And remove encoding_regression* cv_lm_003_prod_comp*