Fix BCKDH Genes and Remove Mito & Nuc Thiocyanate <-> Hypothiocyanite Reactions

[Devlin-Moyer]

Main improvements in this PR:

As proposed in #742:

• Adds ENSG00000137992 to the GPRs of MAR06416, MAR06419, and MAR06421
• Removes MAR02532 and MAM02158m
• Removes MAR02534, MAM02158n, and MAM02986n
• Removes ENSG00000130508 and ENSG00000117592 from the GPR of MAR06523
• Adds PMID:11013238 and PMID:31989833 to the list of references for MAR06523
• Removes ENSG00000142046 from the GPRs of MAR06416, MAR06419, MAR06421, and MAR06523 as well as the list of genes in Human-GEM

I hereby confirm that I have:

• Tested my code on my own computer for running the model
• Selected develop as a target branch
• Any removed reactions and metabolites have been moved to the corresponding deprecated identifier lists

[Devlin-Moyer]

ah whoops; the validation is failing because I removed the gene entry for TMEM91 (ENSG00000142046) but it's still in the GPRs of MAR03748 and MAR03780, which I missed because I removed those in #743 and forgot that that wasn't merged yet. We can either

1. wait until Fix Duplicate BCKDH Reactions #743 is merged into develop then merge develop into here
2. also remove TMEM91 from the GPRs of MAR03748 and MAR03780 in this PR

[haowang-bioinfo]

would prefer to option1 that makes things easier

[Devlin-Moyer]

Apparently MAR02352 and MAR02354 were the only reactions that thiocyanate (MAM2986) or hypothiocyanite (MAM02158) were involved in in the mitochondrial and nuclear compartments, respectively; I'm just going to remove those metabolites, since they also exist in other compartments where there is evidence to support their existence (namely the cytosol and lysosome)

[haowang-bioinfo]

great work